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Subject: Lucas, which shape wouldn't work?
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A square cross-section, a rectangular cross-section, an equilateral triangl=
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Quiz of the Week
The picture or diagram that goes with your problem. ( https://brilliant.org=
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Which of these shapes could not be a cross-section of a cube? ( https://bri=
lliant.org/practice/thinking-in-3d/?problem=3Dexplore-3d-geometry-problem-1=
64449&chapter=3Dintroduction-34&utm_source=3Dbrilliant&utm_medium=3Demail&u=
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Image of the possible answers for this problem. ( https://brilliant.org/pra=
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Solve ( https://brilliant.org/practice/thinking-in-3d/?problem=3Dexplore-3d=
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@media only screen and (max-width: 240px) {
table[class=3D"body"] .follower-stats {
width: 100% !important;
min-width: 0 !important;
}
}
.follower-stats td {
font-size: 13px;
color: #777;
}
.follower-stats td.following,
.follower-stats td.followers {
width: 48%;
}
.follower-stats td.following {
text-align: left;
}
.follower-stats td.followers {
text-align: right;
}
.follower-stats td.spacer {
width: 4%;
}
.follower-stats td strong {
color: #333;
}
/*-------------------- answer form --------------------*/
.form-buttons {
width: 100%;
min-width: 100%;
}
.form-buttons td {
font-size: 14px;
}
.form-buttons td.view-solutions,
.form-buttons td.submit {
width: 48%;
padding-top: 14px;
}
.form-buttons td.spacer {
width: 4%;
}
.answer .button {
border: 1px solid #777;
}
.answer .button,
.answer .button td {
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
}
.answer .button td {
background: #f7f7f7;
color: #777;
text-align: left;
}
.answer .button td a.button-link:link,
.answer .button td a.button-link:visited,
.answer .button td a.button-link:hover,
.answer .button td a.button-link:active {
border-width: 11px 0;
border-color: #f7f7f7;
color: #777 !important;
}
.view-solutions .button {
border: 1px solid #333;
}
.view-solutions .button td {
background: #fff;
color: #333;
}
.view-solutions .button td a.button-link:link,
.view-solutions .button td a.button-link:visited,
.view-solutions .button td a.button-link:hover,
.view-solutions .button td a.button-link:active {
border-width: 11px 0;
border-color: #fff;
color: #333 !important;
}
.submit .button td {
border: 1px solid #03a9f4;
}
.submit .button td a.button-link:link,
.submit .button td a.button-link:visited,
.submit .button td a.button-link:hover,
.submit .button td a.button-link:active {
border-width: 11px 0;
}
/*-------------------- set --------------------*/
.set-header {
margin-top: 7px;
}
.set-subheader {
margin-top: 5px;
}
/*-------------------- mobile app badges --------------------*/
.mobile-app-badges {
width: 100%;
min-width: 100%;
}
.mobile-app-badges td {
padding-top: 28px;
line-height: 10px;
}
.inner .mobile-app-badges td {
padding-top: 8px;
}
.mobile-app-badges td.app-store,
.mobile-app-badges td.google-play {
width: 47%;
}
.mobile-app-badges td.app-store {
text-align: right;
}
.mobile-app-badges td.google-play {
text-align: left;
}
.mobile-app-badges td.spacer {
width: 6%;
}
/*-------------------- footer --------------------*/
.text-footer {
color: #333;
}
.footer {
padding-top: 14px;
padding-bottom: 14px;
font-size: 12px;
line-height: 16px;
color: #bbb;
text-align: center;
}
.footer a:link,
.footer a:visited,
.footer a:hover,
.footer a:active,
a.footer-link:link,
a.footer-link:visited,
a.footer-link:hover,
a.footer-link:active {
color: #bbb !important;
}
.footer a,
a.footer-link {
text-decoration: underline;
}
.footer a:hover,
a.footer-link:hover {
text-decoration: none;
}
/*-------------------- potw difficulty buttons --------------------=
*/
.potw-difficulty-table {
width: 100%;
margin-bottom: 10px;
}
.potw-difficulty-table td {
width: 33.33%;
}
.potw-difficulty-option {
display: block;
width: 100%;
padding: 4px 0;
border: 1px solid #D4D4D4;
text-align: center;
color: #777777;
font-size: 14px;
}
.potw-difficulty-option.active {
background: #D8D8D8;
color: #333;
}
/*-------------------- chapter list --------------------*/
table.chapter {
width: 306px;
border-collapse: separate !important;
box-shadow: 0 2px 4px #d2d8e0;
border: 1px solid #DDD;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
}
table.chapter a {
display: block;
}
td.chapter-image,
td.chapter-text,
td.chapter-progress {
padding: 8px 0;
vertical-align: middle;
}
td.chapter-image {
width: 92px;
}
.chapter-image span,
.chapter-image img {
display: block;
width: 60px;
height: 60px;
-webkit-border-radius: 10px;
-moz-border-radius: 10px;
border-radius: 10px;
}
.chapter-text h2 {
margin: 0 0 2px 0;
font-size: 16px;
font-weight: 700;
line-height: 1.3em;
}
.chapter-text h2 a {
color: #333 !important;
}
.chapter-text p {
margin: 0;
font-size: 13px;
line-height: 1.2em;
}
.chapter-text p a {
color: #333 !important;
}
td.chapter-progress {
width: 67px;
}
.chapter-progress table,
.chapter-progress table td {
width: 35px;
height: 35px;
}
.chapter-progress table td {
background-color: #eee;
font-weight: bold;
font-size: 14px;
text-align: center;
vertical-align: middle;
-webkit-border-radius: 50%;
-moz-border-radius: 50%;
border-radius: 50%;
}
.chapter-progress.condensed table td {
font-size: 12px;
}
.chapter-progress table td a {
color: #0277bd !important;
}
/*-------------------- quiz gallery --------------------*/
table.quiz-gallery {
width: 306px;
border-collapse: separate !important;
margin: 0 auto;
position: relative;
}
table.quiz-gallery a {
display: block;
}
td.quiz-gallery-column {
width: 126px;
padding-left: 8px;
padding-right: 8px;
}
td.quiz-gallery-column,
td.quiz-gutter {
border-bottom: 1px solid #fff;
}
td.quiz-gutter {
width: 18px;
}
td.quiz-card {
padding-top: 16px;
padding-bottom: 16px;
box-shadow: 0 2px 4px #d2d8e0;
border: 1px solid #DDD;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
}
table.quiz-image {
margin: 0 auto;
position: relative;
}
table.quiz-image,
table.quiz-image td {
width: 100px;
height: 100px;
}
.quiz-card.intro table.quiz-image,
.quiz-card.intro table.quiz-image td {
width: 126px;
height: 126px;
}
table.quiz-image td {
vertical-align: middle;
}
table.quiz-image img {
display: block;
max-width: 100px;
max-height: 100px;
}
.quiz-card.intro table.quiz-image img {
max-width: 126px;
max-height: 126px;
}
table.quiz-title {
width: 126px;
}
table.quiz-title,
table.quiz-title td {
height: 65px;
}
.quiz-card.intro table.quiz-title,
.quiz-card.intro table.quiz-title td {
height: 39px;
}
.quiz-title td {
vertical-align: middle;
}
.quiz-title h2 {
line-height: 19px;
word-wrap: break-word;
word-break: break-word;
}
.quiz-title h2 a {
color: #333 !important;
}
table.quiz-progress {
width: 126px;
}
table.quiz-progress,
td.quiz-progress-content {
height: 41px;
vertical-align: bottom;
}
table.quiz-progress img {
display: block;
}
table.quiz-items {
width: 126px;
}
table.quiz-items,
table.quiz-items td,
table.quiz-items td a {
height: 8px;
}
table.quiz-items td {
width: 126px;
background: #e8e8e8;
border-right: 1px solid #fbfbfb;
font-size: 1px;
line-height: 1px;
}
table.quiz-items td.completed {
background: #ffde5c;
}
table.quiz-number {
width: 126px;
}
.quiz-number td {
padding-top: 8px;
font-size: 13px;
color: #777;
text-align: center;
}
.quiz-number td a {
color: #333 !important;
}
/*-------------------- chapter map --------------------*/
table.chapter.completed {
position: relative;
margin: 0 auto;
box-shadow: none;
border-width: 2px;
}
table.chapter-quizzes-connector {
position: relative;
width: 306px;
margin: 0 auto;
}
table.chapter-quizzes-connector,
table.chapter-quizzes-connector td {
height: 18px;
}
.chapter-quizzes-connector td {
width: 153px;
}
.chapter-quizzes-connector .left {
border-right: 2px solid #f0f0f0;
}
table.completed-quizzes {
margin: 0 auto;
border: 2px solid #f0f0f0;
position: relative;
}
td.completed-quizzes-content {
padding-bottom: 18px;
}
table.completed-quizzes table.quiz-gallery {
width: 264px;
}
.completed-quizzes td.quiz-gallery-column {
width: 84px;
padding-top: 8px;
padding-bottom: 8px;
}
.completed-quizzes td.quiz-gallery-column.empty {
width: 100px;
padding: 0;
}
.completed-quizzes table.quiz-image,
.completed-quizzes table.quiz-image td {
width: 50px;
height: 50px;
}
.completed-quizzes table.quiz-image img {
display: block;
max-width: 50px;
max-height: 50px;
}
.completed-quizzes table.quiz-title,
.completed-quizzes table.quiz-progress {
width: 84px;
}
.completed-quizzes .quiz-title h2 {
font-size: 12px;
line-height: 15px;
}
.completed-quizzes table.quiz-progress,
.completed-quizzes td.quiz-progress-content {
height: 17px;
}
table.completed-quiz-connector {
border-bottom: 2px solid #f0f0f0;
}
table.completed-quiz-connector,
table.completed-quiz-connector td {
width: 18px;
height: 75px;
}
.empty table.completed-quiz-connector,
.empty table.completed-quiz-connector td {
width: 102px;
}
/*-------------------- daily problems --------------------*/
.daily-problems-header .col-right {
text-align: right;
font-size: 17px;
}
.daily-problems-header td.spacer {
width: 20px;
}
.daily-problems-header .date {
font-size: 13px;
color: #919191;
}
.daily-problems-header .inner td {
padding: 20px 0;
vertical-align: middle;
}
.daily-problem-content,
.more-problems {
border-top: 1px solid #F0F0F0;
}
.daily-problem-content .track-name {
margin: 0;
font-weight: 500;
font-size: 13px;
text-transform: uppercase;
color: #899098;
}
.daily-problem-content .problem-title {
margin: 15px 0 0 0;
font-weight: bold;
font-size: 20px;
color: #1F1F1F !important;
}
.daily-problem-content .preview {
padding-bottom: 10px;
}
.daily-problem-content .problem-text .p {
font-size: 15px;
line-height: 26px;
}
=20=20=20=20=20=20=20=20=20=20=20=20
.daily-problem-content .problem-title {
font-size: 28px;
line-height: 34px;
}
.daily-problem-content .problem-text .p {
font-size: 20px;
line-height: 28px;
}
.daily-problem-content .problem-text .image-caption {
display: inline-block;
text-align: left;
}
=20=20=20=20=20=20=20=20=20=20=20=20
.daily-problem-content .more {
font-weight: bold;
color: #0C6AC7;
}
.daily-problem-content table.button {
-webkit-border-radius: 3px;
-moz-border-radius: 3px;
-ms-border-radius: 3px;
border-radius: 3px;
}
.daily-problem-content table.button td {
background: #007AFF;
}
.daily-problem-content table.button td a.button-link:li=
nk,
.daily-problem-content table.button td a.button-link:vi=
sited,
.daily-problem-content table.button td a.button-link:ho=
ver,
.daily-problem-content table.button td a.button-link:ac=
tive {
border-width: 14px 0;
border-color: #007AFF;
}
a.snooze-reminders:link,
a.snooze-reminders:visited,
a.snooze-reminders:hover,
a.snooze-reminders:active {
color: #0C6AC7 !important;
}
.top-daily-problem-content h2,
.top-daily-problem-content h3,
.more-problems h2 {
margin-top: 10px;
font-weight: bold;
color: #0C6AC7;
}
.top-daily-problem-content h2 {
font-size: 17px;
}
.top-daily-problem-content h3 {
font-size: 15px;
}
.top-daily-problem-content .problem-text .p {
font-size: 18px;
}
.more-problems h2 {
margin-bottom: 8px;
font-size: 16px;
}
.top-daily-problem-content .track-name {
margin-top: 12px;
}
.top-daily-problem-content .preview {
margin-top: 0;
}
table.problem-card {
margin-bottom: 10px;
border-collapse: separate !important;
border: 1px solid #BBB;
-webkit-border-radius: 10px;
-moz-border-radius: 10px;
-ms-border-radius: 10px;
border-radius: 10px;
-webkit-box-shadow: 0 1px 4px #BBB;
-moz-box-shadow: 0 1px 4px #BBB;
-ms-box-shadow: 0 1px 4px #BBB;
box-shadow: 0 1px 4px #BBB;
}
.problem-card td {
vertical-align: middle;
}
.problem-card td.spacer {
width: 24px;
}
.problem-card td.track {
padding: 10px 0 6px 0;
font-weight: 500;
font-size: 11px;
letter-spacing: 0.1em;
text-transform: uppercase;
}
.problem-card td.track,
.problem-card td.track a:link,
.problem-card td.track a:visited,
.problem-card td.track a:hover,
.problem-card td.track a:active {
color: #1F1F1F !important;
}
.problem-card td.title {
width: 176px;
font-weight: bold;
font-size: 22px;
line-height: 27px;
color: #333;
}
.problem-card td.title,
.problem-card td.title a:link,
.problem-card td.title a:visited,
.problem-card td.title a:hover,
.problem-card td.title a:active {
color: #333 !important;
}
.problem-card td.img {
width: 80px;
text-align: right;
}
.problem-card td.img table {
margin-left: 16px;
overflow: hidden;
-webkit-border-radius: 8px;
-moz-border-radius: 8px;
-ms-border-radius: 8px;
border-radius: 8px;
}
.problem-card td.img table,
.problem-card td.img table td {
width: 64px;
}
.problem-card td.text {
padding: 12px 0 8px 0;
border-bottom: 1px solid #ddd;
font-size: 13px;
line-height: 21px;
color: #1F1F1F;
}
.problem-card td.text,
.problem-card td.text a:link,
.problem-card td.text a:visited,
.problem-card td.text a:hover,
.problem-card td.text a:active {
color: #1F1F1F !important;
}
.problem-card td.popularity {
font-weight: 500;
font-size: 12px;
color: #6D7E8E;
}
.problem-card td.popularity,
.problem-card td.popularity a:link,
.problem-card td.popularity a:visited,
.problem-card td.popularity a:hover,
.problem-card td.popularity a:active {
color: #6D7E8E !important;
}
.problem-card td.action {
padding: 12px 0;
}
.problem-card td.action .button {
border: 1px solid #005FFA;
-webkit-box-shadow: none;
-moz-box-shadow: none;
-ms-box-shadow: none;
box-shadow: none;
}
.problem-card td.action .button,
.problem-card td.action .button td {
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
-ms-border-radius: 4px;
border-radius: 4px;
}
.problem-card td.action .button td {
padding: 0 5px;
background: #fff;
font-weight: bold;
font-size: 13px;
color: #005FFA;
white-space: nowrap;
}
.problem-card td.action .button td a.button-link:li=
nk,
.problem-card td.action .button td a.button-link:vi=
sited,
.problem-card td.action .button td a.button-link:ho=
ver,
.problem-card td.action .button td a.button-link:ac=
tive {
border-width: 4px 0;
border-color: #fff;
color: #005FFA !important;
}
.set-reminders table.button {
-webkit-border-radius: 3px;
-moz-border-radius: 3px;
-ms-border-radius: 3px;
border-radius: 3px;
}
.set-reminders table.button td {
background: #005FFA;
font-size: 13px;
}
.set-reminders table.button td a.button-link:link,
.set-reminders table.button td a.button-link:visited,
.set-reminders table.button td a.button-link:hover,
.set-reminders table.button td a.button-link:active {
border-color: #005FFA;
}
.set-reminders table.button img {
vertical-align: -2px;
}
/*-------------------- gifting emails --------------------*/
.gifting-header {
background: #1f1f1f;
}
=20=20=20=20=20=20=20=20
.gifting-header.blue-bg {
background: #3A7CC0;
}
.gifting-header td {
vertical-align: middle;
}
.gifting-header td.gifting-header-text {
width: 55.35%;
}
.gifting-header td.gifting-header-image {
width: 44.65%;
text-align: right;
vertical-align: bottom;
}
.gifting-header-text table {
width: 100%;
}
.gifting-header-text table td {
height: auto;
padding: 16px 0 16px 22px;
font-weight: bold;
font-size: 23px;
line-height: 27px;
word-wrap: break-word;
word-break: break-word;
color: #fff;
}
.gifting-header-text a:link,
.gifting-header-text a:visited,
.gifting-header-text a:hover,
.gifting-header-text a:active {
color: #fff !important;
}
.gifting-header-image a,
.gifting-header-image img {
display: block;
font-size: 1px;
line-height: 1px;
}
.gifting-header-image img {
max-width: 100%;
width: 100%;
}
/*-------------------- NUX emails --------------------*/
.nux-intro-blurb .content {
font-size: 17px;
line-height: 29px;
}
.nux-problem-content .track-name {
font-size: 12px;
}
.nux-problem-content .problem-title {
font-size: 18px;
}
.nux-problem-content .button td {
font-size: 17px;
}
.suggested-chapter {
padding: 30px 0;
border-top: 1px solid #F0F0F0;
}
.suggested-chapter h3 {
width: 342px;
margin: 0 auto 28px auto;
font-size: 16px;
font-weight: bold;
text-align: left;
}
table.chapter-card {
width: 342px;
overflow: hidden;
border-radius: 8px;
box-shadow: 0 4px 4px rgba(0, 0, 0, 0.25);
}
td.chapter-card-text {
width: 208px;
padding: 24px 0 23px 30px;
}
.chapter-card-text h4 {
padding-bottom: 9px;
margin-bottom: 8px;
border-bottom: 1px solid #aaa;
font-weight: bold;
font-size: 24px;
line-height: 30px;
}
.chapter-card-text h4 a {
color: #fff !important;
}
.chapter-card-text table {
width: 100%;
}
.chapter-card-text table td {
padding: 2px 0;
font-size: 12px;
line-height: 15px;
}
.chapter-card-text table td.left {
width: 63px;
padding-left: 4px;
}
.chapter-card-text table td a {
color: #fff !important;
}
td.chapter-card-image {
width: 85px;
padding: 24px 0 0 20px;
vertical-align: top;
}
.chapter-card-image table,
.chapter-card-image table td {
width: 64px;
}
.chapter-card-image table {
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
background: #ccc;
background: url('https://static.brilliant.org/static/sy=
nc/email-images/nux/chapter-image-bg.png') repeat;
background: rgba(255, 255, 255, 0.13);
border-radius: 8px;
overflow: hidden;
}
.chapter-card-image table td {
padding: 17px 0;
vertical-align: middle;
}
.chapter-card-image table table,
.chapter-card-image table table td {
width: 52px;
}
.chapter-card-image table table {
border-radius: 50%;
overflow: hidden;
}
.chapter-card-image table table td {
padding: 6px 0;
}
.chapter-card-image img {
border-radius: 50%;
overflow: hidden;
}
/*-------------------- 7 Day Challenge --------------------*/
.seven-day-challenge .daily-problems-header td.spacer {
width: 10px;
}
.seven-day-challenge .daily-problems-header .col-right {
padding: 16px 0;
}
.seven-day-challenge .daily-problems-header .col-right h1 {
font-weight: bold;
font-size: 16px;
line-height: 28px;
}
.seven-day-challenge .daily-problems-header .date {
font-size: 12px;
line-height: 16px;
color: #919191;
}
/*-------------------- 7 Day Challenge endstate -------------------=
-*/
.seven-day-challenge-endstate {
line-height: 21px;
}
.seven-day-challenge-endstate h1 {
font-weight: bold;
font-size: 24px;
line-height: 28px;
text-align: center;
}
.seven-day-challenge-endstate h1 .emoji {
vertical-align: -1px;
}
.seven-day-challenge-endstate p {
margin: 4px 0;
}
.seven-day-challenge-header {
background: #d2e9f8 url('https://static.brilliant.org/static/sy=
nc/email-images/nux/7-day-challenge-header-bg.png') center top repeat-x;
}
.seven-day-challenge-header .inner td {
padding: 14px 0;
font-size: 17px;
line-height: 28px;
}
.seven-day-challenge-header h1 {
margin-top: 12px;
font-weight: bold;
font-size: 24px;
line-height: 28px;
}
</style>
<style type=3D"text/css">
/*-------------------- challenge yourself --------------------*/
.challenge-yourself {
padding-top: 28px;
line-height: 130%;
}
.challenge-yourself h2 {
margin-bottom: 16px;
font-size: 20px;
}
.challenge-yourself table.img {
width: 100%;
}
.challenge-yourself .img td {
padding: 22px 0 18px 0;
}
.challenge-yourself .img img {
width: 100%;
min-width: 100%;
}
.challenge-yourself .button-new {
margin-top: 9px;
}
</style></head>
=20
<body style=3D"background-color: #f7f7f7; width: 100% !important; heigh=
t: 100% !important; min-width: 100%; line-height: 100% !important; -webkit-=
text-size-adjust: 100%; -ms-text-size-adjust: 100%; font-family: 'Helve=
tica', 'Arial', sans-serif; font-weight: normal; font-size: 15p=
x; color: #333; margin: 0; padding: 0;" bgcolor=3D"#f7f7f7">
=20=20=20=20=20=20=20=20
<table class=3D"body" style=3D"background-color: #f7f7f7; width: 10=
0% !important; height: 100% !important; min-width: 100%; line-height: 100% =
!important; -webkit-text-size-adjust: 100%; -ms-text-size-adjust: 100%; bor=
der-collapse: collapse !important; max-width: 100%; mso-table-lspace: 0pt; =
mso-table-rspace: 0pt; border-spacing: 0; vertical-align: top; text-align: =
left; font-family: 'Helvetica', 'Arial', sans-serif; font-w=
eight: normal; font-size: 15px; color: #333; margin: 0; padding: 0;" bgcolo=
r=3D"#f7f7f7"><tbody><tr style=3D"vertical-align: top; text-align: left; ma=
rgin: 0; padding: 0;" align=3D"left"><td class=3D"center" align=3D"center" =
valign=3D"top" style=3D"border-collapse: collapse !important; vertical-alig=
n: top; text-align: center; font-family: 'Helvetica', 'Arial=
9;, sans-serif; font-weight: normal; font-size: 15px; line-height: 18px; co=
lor: #333; margin: 0; padding: 0;"><center style=3D"width: 100%; min-width:=
0 !important;">
<center style=3D"width: 100%; min-width: 0 !important;"><div cl=
ass=3D"preview-text center" style=3D"font-family: 'Helvetica', '=
;Arial', sans-serif; font-weight: normal; font-size: 1px; line-height: =
1px; color: #f7f7f7; text-align: center; display: none; margin: 0; padding:=
0;" align=3D"center">A square cross-section, a rectangular cross-section, =
an equilateral triangle cross-section, an isosceles triangle cross-section.=
</div></center>
=20=20=20=20=20=20=20=20=20=20=20=20
<table class=3D"outer" style=3D"border-collapse: collapse !impo=
rtant; max-width: 100%; mso-table-lspace: 0pt; mso-table-rspace: 0pt; borde=
r-spacing: 0; vertical-align: top; text-align: left; width: 448px; margin: =
0 auto; padding: 0;"><tbody><tr style=3D"vertical-align: top; text-align: l=
eft; margin: 0; padding: 0;" align=3D"left"><td class=3D"header center" ali=
gn=3D"center" style=3D"border-collapse: collapse !important; vertical-align=
: top; text-align: center; font-family: 'Helvetica', 'Arial'=
;, sans-serif; font-weight: normal; font-size: 15px; line-height: 18px; col=
or: #333; margin: 0; padding: 13px 0 7px;" valign=3D"top"><center style=3D"=
width: 100%; min-width: 0 !important;">
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
<a href=3D"https://t.brilliant.org/e/c/eyJlbWFpbF9pZCI6IlJQ=
NG9BUUFCY0k4LWhHRzFrSzZHQU5oYzdHakwiLCJocmVmIjoiaHR0cHM6Ly9icmlsbGlhbnQub3J=
nLz91dG1fc291cmNlPWJyaWxsaWFudFx1MDAyNmF1dG9fbG9naW5fa2V5PW03V0RaZFRnVmdsWW=
VPTjhCYVJDeTJiYnRaNFBKUFZyelR1TzVra2FXdVx1MDAyNnV0bV9tZWRpdW09ZW1haWxcdTAwM=
jZ1dG1fY2FtcGFpZ249bmxzLWFwMHN1YjEtb2JcdTAwMjZ1dG1fY29udGVudD1sb2dvTGluayIs=
ImxpbmtfaWQiOjIyNjY2MDIxLCJwb3NpdGlvbiI6MH0/d0a726d9e0869dbaf43fdfdecd6e368=
e57c0a19401ad19580db2660b339948b5" style=3D"color: #03a9f4 !important; text=
-decoration: none;">
<img class=3D"center" title=3D"Brilliant" src=3D"https:=
//static.brilliant.org/static/manual/black-logo.png" width=3D"135" height=
=3D"28" border=3D"0" alt=3D"Brilliant" style=3D"max-width: 100%; height: au=
to; line-height: 100%; outline: none; text-decoration: none; -ms-interpolat=
ion-mode: bicubic; text-align: center; margin: 0 auto; border: 0 none;"/>
</a>
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
<p style=3D"font-size: 20px; font-weight: bold; line-he=
ight: 1.2em; margin-bottom: 14px; font-family: 'Helvetica', 'Ar=
ial', sans-serif; color: #333;">
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
<span>Quiz of the Week</span>
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
</p>
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
</center></td></tr></tbody></table>
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
<table class=3D"outer" style=3D"border-collapse: collapse !=
important; max-width: 100%; mso-table-lspace: 0pt; mso-table-rspace: 0pt; b=
order-spacing: 0; vertical-align: top; text-align: left; width: 448px; marg=
in: 0 auto; padding: 0;"><tbody><tr style=3D"vertical-align: top; text-alig=
n: left; margin: 0; padding: 0;" align=3D"left"><td class=3D"content-wrappe=
r center problem-content" align=3D"center" style=3D"border-collapse: collap=
se !important; vertical-align: top; text-align: center; font-family: 'H=
elvetica', 'Arial', sans-serif; font-weight: normal; font-size:=
15px; line-height: 18px; color: #333; width: 448px; background-color: #fff=
; margin: 0; padding: 0;" bgcolor=3D"#fff" valign=3D"top"><center style=3D"=
width: 100%; min-width: 0 !important;">
<table class=3D"inner" style=3D"border-collapse: collap=
se !important; max-width: 100%; mso-table-lspace: 0pt; mso-table-rspace: 0p=
t; border-spacing: 0; vertical-align: top; text-align: left; width: 306px; =
position: relative; margin: 0 auto; padding: 0;"><tbody><tr style=3D"vertic=
al-align: top; text-align: left; margin: 0; padding: 0;" align=3D"left"><td=
class=3D"content" style=3D"border-collapse: collapse !important; vertical-=
align: top; text-align: left; font-family: 'Helvetica', 'Arial&=
#39;, sans-serif; font-weight: normal; font-size: 15px; line-height: 18px; =
color: #333; position: relative; margin: 0; padding: 20px 0 28px;" align=3D=
"left" valign=3D"top">
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
<br style=3D"font-family: 'Helvetica', '=
;Arial', sans-serif; font-weight: normal; font-size: 15px; line-height:=
18px; color: #333;"/>
<center style=3D"width: 100%; min-width: 0 !important;">
<a href=3D"https://t.brilliant.org/e/c/eyJlbWFpbF9pZCI6IlJQNG9BUUFCY0k4=
LWhHRzFrSzZHQU5oYzdHakwiLCJocmVmIjoiaHR0cHM6Ly9icmlsbGlhbnQub3JnL3ByYWN0aWN=
lL3RoaW5raW5nLWluLTNkLz9wcm9ibGVtPWV4cGxvcmUtM2QtZ2VvbWV0cnktcHJvYmxlbS0xNj=
Q0NDlcdTAwMjZjaGFwdGVyPWludHJvZHVjdGlvbi0zNFx1MDAyNnV0bV9zb3VyY2U9YnJpbGxpY=
W50XHUwMDI2dXRtX21lZGl1bT1lbWFpbFx1MDAyNnV0bV9jYW1wYWlnbj1ubHMtYXAwc3ViMS1v=
Ylx1MDAyNnV0bV90ZXJtPTNkLWdlb21ldHJ5LWFcdTAwMjZhdXRvX2xvZ2luX2tleT1tN1dEWmR=
UZ1ZnbFllT044QmFSQ3kyYmJ0WjRQSlBWcnpUdU81a2thV3VcdTAwMjZ1dG1fY29udGVudD1pbW=
FnZUxpbmsiLCJwb3NpdGlvbiI6MX0/2201d3271aaaddc8b175cf5847d966ea92d65b64cebe3=
c09981534c14d91f6a9" style=3D"color: #03a9f4 !important; text-decoration: n=
one;"><img width=3D"306" class=3D"center" src=3D"https://static.brilliant.o=
rg/static/email/auto-templated-newsletters/3d-geometry-a-PY4OYQKLQ4Cfx5Hq.p=
ng" alt=3D"The picture or diagram that goes with your problem." title=3D"Th=
e picture or diagram that goes with your problem." style=3D"max-width: 100%=
; height: auto; line-height: 100%; outline: none; text-decoration: none; -m=
s-interpolation-mode: bicubic; text-align: center; margin: 0 auto; border: =
0 none;"/></a>
</center>
<br style=3D"font-family: 'Helvetica', 'Arial', sans-serif;=
font-weight: normal; font-size: 15px; line-height: 18px; color: #333;"/>
<a href=3D"https://t.brilliant.org/e/c/eyJlbWFpbF9pZCI6IlJQNG9BUUFCY0k4LWhH=
RzFrSzZHQU5oYzdHakwiLCJocmVmIjoiaHR0cHM6Ly9icmlsbGlhbnQub3JnL3ByYWN0aWNlL3R=
oaW5raW5nLWluLTNkLz9wcm9ibGVtPWV4cGxvcmUtM2QtZ2VvbWV0cnktcHJvYmxlbS0xNjQ0ND=
lcdTAwMjZjaGFwdGVyPWludHJvZHVjdGlvbi0zNFx1MDAyNnV0bV9zb3VyY2U9YnJpbGxpYW50X=
HUwMDI2dXRtX21lZGl1bT1lbWFpbFx1MDAyNnV0bV9jYW1wYWlnbj1ubHMtYXAwc3ViMS1vYlx1=
MDAyNnV0bV90ZXJtPTNkLWdlb21ldHJ5LWFcdTAwMjZhdXRvX2xvZ2luX2tleT1tN1dEWmRUZ1Z=
nbFllT044QmFSQ3kyYmJ0WjRQSlBWcnpUdU81a2thV3VcdTAwMjZ1dG1fY29udGVudD1wcm9ibG=
VtVGV4dExpbmsiLCJwb3NpdGlvbiI6Mn0/ec33410c3538402b27a7f86b30d3d26b6d30facf6=
f0a3eac5b2887636c1bedd5" style=3D"color: #03a9f4 !important; text-decoratio=
n: none;"><div class=3D"problem-text" style=3D"font-family: 'Helvetica&=
#39;, 'Arial', sans-serif; font-weight: normal; font-size: 15px; li=
ne-height: 18px; color: #333; margin: 18px 0 0; padding: 0;"><div class=3D"=
p" style=3D"font-family: 'Helvetica', 'Arial', sans-serif; =
font-weight: normal; font-size: 18px; line-height: 22px; color: #333; margi=
n: 10px 0 0; padding: 0;">Which of these shapes could <strong>not</strong> =
be a cross-section of a cube?</div></div></a>
<br style=3D"font-family: 'Helvetica', 'Arial', sans-serif;=
font-weight: normal; font-size: 15px; line-height: 18px; color: #333;"/>
<br style=3D"font-family: 'Helvetica', 'Arial', sans-serif;=
font-weight: normal; font-size: 15px; line-height: 18px; color: #333;"/>
<center style=3D"width: 100%; min-width: 0 !important;"><a href=3D"https://=
t.brilliant.org/e/c/eyJlbWFpbF9pZCI6IlJQNG9BUUFCY0k4LWhHRzFrSzZHQU5oYzdHakw=
iLCJocmVmIjoiaHR0cHM6Ly9icmlsbGlhbnQub3JnL3ByYWN0aWNlL3RoaW5raW5nLWluLTNkLz=
9wcm9ibGVtPWV4cGxvcmUtM2QtZ2VvbWV0cnktcHJvYmxlbS0xNjQ0NDlcdTAwMjZjaGFwdGVyP=
WludHJvZHVjdGlvbi0zNFx1MDAyNnV0bV9zb3VyY2U9YnJpbGxpYW50XHUwMDI2dXRtX21lZGl1=
bT1lbWFpbFx1MDAyNnV0bV9jYW1wYWlnbj1ubHMtYXAwc3ViMS1vYlx1MDAyNnV0bV90ZXJtPTN=
kLWdlb21ldHJ5LWFcdTAwMjZhdXRvX2xvZ2luX2tleT1tN1dEWmRUZ1ZnbFllT044QmFSQ3kyYm=
J0WjRQSlBWcnpUdU81a2thV3VcdTAwMjZ1dG1fY29udGVudD1pbWFnZUxpbmsiLCJwb3NpdGlvb=
iI6M30/4fadbc1b6b6e381f9f89efe39bce3633891327c542997f84f52bb4224affbd1e" st=
yle=3D"color: #03a9f4 !important; text-decoration: none;"><img width=3D"306=
" class=3D"center" src=3D"https://static.brilliant.org/static/email/auto-te=
mplated-problems/explore-3d-geometry-problem-164449-FsKLOaPbH73RZFGn-mcq.pn=
g?v=3D1563200029.25" alt=3D"Image of the possible answers for this problem.=
" title=3D"Image of the possible answers for this problem." style=3D"max-wi=
dth: 100%; height: auto; line-height: 100%; outline: none; text-decoration:=
none; -ms-interpolation-mode: bicubic; text-align: center; margin: 0 auto;=
border: 0 none;"/></a></center>
<br style=3D"font-family: 'Helvetica', 'Arial', sans-serif;=
font-weight: normal; font-size: 15px; line-height: 18px; color: #333;"/><b=
r style=3D"font-family: 'Helvetica', 'Arial', sans-serif; f=
ont-weight: normal; font-size: 15px; line-height: 18px; color: #333;"/>
<table cellspacing=3D"0" class=3D"button" style=3D"=
border-collapse: separate !important; max-width: 100%; mso-table-lspace: 0p=
t; mso-table-rspace: 0pt; border-spacing: 0; vertical-align: top; text-alig=
n: left; width: 100%; min-width: 100%; overflow: hidden; -webkit-box-shadow=
: 0 1px 1px rgba(0, 0, 0, 0.2); -moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.=
2); -ms-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2); box-shadow: 0 1px 1px rgb=
a(0, 0, 0, 0.2); -webkit-border-radius: 5px; -moz-border-radius: 5px; -ms-b=
order-radius: 5px; border-radius: 5px; margin: 0; padding: 0;"><tbody><tr s=
tyle=3D"vertical-align: top; text-align: left; margin: 0; padding: 0;" alig=
n=3D"left"><td style=3D"border-collapse: collapse !important; vertical-alig=
n: top; text-align: center; font-family: 'Helvetica', 'Arial=
9;, sans-serif; font-weight: normal; font-size: 15px; line-height: 18px; co=
lor: #fff; display: block; width: auto !important; overflow: hidden; backgr=
ound-color: #03a9f4; margin: 0; padding: 0 10px;" align=3D"center" bgcolor=
=3D"#03a9f4" valign=3D"top">
<a href=3D"https://t.brilliant.org/e/c/eyJlbWFp=
bF9pZCI6IlJQNG9BUUFCY0k4LWhHRzFrSzZHQU5oYzdHakwiLCJocmVmIjoiaHR0cHM6Ly9icml=
sbGlhbnQub3JnL3ByYWN0aWNlL3RoaW5raW5nLWluLTNkLz9wcm9ibGVtPWV4cGxvcmUtM2QtZ2=
VvbWV0cnktcHJvYmxlbS0xNjQ0NDlcdTAwMjZjaGFwdGVyPWludHJvZHVjdGlvbi0zNFx1MDAyN=
nV0bV9zb3VyY2U9YnJpbGxpYW50XHUwMDI2dXRtX21lZGl1bT1lbWFpbFx1MDAyNnV0bV9jYW1w=
YWlnbj1ubHMtYXAwc3ViMS1vYlx1MDAyNnV0bV90ZXJtPTNkLWdlb21ldHJ5LWFcdTAwMjZ1dG1=
fY29udGVudD1ibHVlQnV0dG9uXHUwMDI2YXV0b19sb2dpbl9rZXk9bTdXRFpkVGdWZ2xZZU9OOE=
JhUkN5MmJidFo0UEpQVnJ6VHVPNWtrYVd1IiwibGlua19pZCI6Mzg0NzczNDksInBvc2l0aW9uI=
jo0fQ/49171b5aa504c41748312ede2b336b040b6f780d9a09a55953287137ef71a011" cla=
ss=3D"button-link" style=3D"font-size: 18px; line-height: 22px; color: #fff=
!important; text-decoration: none; display: inline-block; width: 100%; bor=
der-color: #03a9f4; border-style: solid; border-width: 12px 0;">
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
<b>Solve</b>
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20
</a>
</td></tr></tbody></table>
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
</td></tr></tbody></table>
</center></td></tr></tbody></table>
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
=20=20=20=20=20=20=20=20=20=20=20=20
<table class=3D"outer" style=3D"border-collapse: collapse !=
important; max-width: 100%; mso-table-lspace: 0pt; mso-table-rspace: 0pt; b=
order-spacing: 0; vertical-align: top; text-align: left; width: 448px; marg=
in: 0 auto; padding: 0;"><tbody><tr style=3D"vertical-align: top; text-alig=
n: left; margin: 0; padding: 0;" align=3D"left"><td class=3D"content-wrappe=
r center" align=3D"center" style=3D"border-top-width: 1px; border-top-color=
: #F0F0F0; border-top-style: solid; border-collapse: collapse !important; v=
ertical-align: top; text-align: center; font-family: 'Helvetica', &=
#39;Arial', sans-serif; font-weight: normal; font-size: 15px; line-heig=
ht: 18px; color: #333; width: 448px; background-color: #fff; margin: 0; pad=
ding: 0;" bgcolor=3D"#fff" valign=3D"top"><center style=3D"width: 100%; min=
-width: 0 !important;">
<table class=3D"inner" style=3D"border-collapse: collap=
se !important; max-width: 100%; mso-table-lspace: 0pt; mso-table-rspace: 0p=
t; border-spacing: 0; vertical-align: top; text-align: left; width: 306px; =
position: relative; margin: 0 auto; padding: 0;"><tbody><tr style=3D"vertic=
al-align: top; text-align: left; margin: 0; padding: 0;" align=3D"left"><td=
class=3D"content" style=3D"border-collapse: collapse !important; vertical-=
align: top; text-align: left; font-family: 'Helvetica', 'Arial&=
#39;, sans-serif; font-weight: normal; font-size: 15px; line-height: 18px; =
color: #333; position: relative; margin: 0; padding: 20px 0 28px;" align=3D=
"left" valign=3D"top">
<table class=3D"mobile-app-badges" style=3D"border-=
collapse: collapse !important; max-width: 100%; mso-table-lspace: 0pt; mso-=
table-rspace: 0pt; border-spacing: 0; vertical-align: top; text-align: left=
; width: 100%; min-width: 100%; margin: 0; padding: 0;"><tbody><tr style=3D=
"vertical-align: top; text-align: left; margin: 0; padding: 0;" align=3D"le=
ft">
<td class=3D"app-store" style=3D"border-collaps=
e: collapse !important; vertical-align: top; text-align: right; font-family=
: 'Helvetica', 'Arial', sans-serif; font-weight: normal; fo=
nt-size: 15px; line-height: 10px; color: #333; width: 47%; margin: 0; paddi=
ng: 8px 0 0;" align=3D"right" valign=3D"top">
<a href=3D"https://t.brilliant.org/e/c/eyJl=
bWFpbF9pZCI6IlJQNG9BUUFCY0k4LWhHRzFrSzZHQU5oYzdHakwiLCJocmVmIjoiaHR0cHM6Ly9=
pdHVuZXMuYXBwbGUuY29tL3VzL2FwcC9hcHBsZS1zdG9yZS9pZDkxMzMzNTI1Mj9wdD0xMDUwOT=
U4MDNcdTAwMjZjdD1lbWFpbF9mb290ZXJcdTAwMjZtdD04IiwibGlua19pZCI6MTEzNDQ5MzMsI=
nBvc2l0aW9uIjo1fQ/5476bc820af9a96d4e3dc4c7338d0e2c12ac9caec4b0856464a886c1f=
465a84f" style=3D"color: #03a9f4 !important; text-decoration: none;">
<img src=3D"https://static.brilliant.or=
g/static/manual/app-store.png" width=3D"143" height=3D"42" border=3D"0" alt=
=3D"Brilliant" style=3D"max-width: 100%; height: auto; line-height: 100%; o=
utline: none; text-decoration: none; -ms-interpolation-mode: bicubic; borde=
r: 0 none;"/>
</a>
</td>
<td class=3D"spacer" style=3D"border-collapse: =
collapse !important; vertical-align: top; text-align: left; font-family: &#=
39;Helvetica', 'Arial', sans-serif; font-weight: normal; font-s=
ize: 15px; line-height: 10px; color: #333; width: 6%; margin: 0; padding: 8=
px 0 0;" align=3D"left" valign=3D"top"></td>
<td class=3D"google-play" style=3D"border-colla=
pse: collapse !important; vertical-align: top; text-align: left; font-famil=
y: 'Helvetica', 'Arial', sans-serif; font-weight: normal; f=
ont-size: 15px; line-height: 10px; color: #333; width: 47%; margin: 0; padd=
ing: 8px 0 0;" align=3D"left" valign=3D"top">
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