<?xml version="1.0"?>
<oembed><version>1.0</version><provider_name>Classis</provider_name><provider_url>https://classicalchristian.org/classis</provider_url><author_name>Jason Sells</author_name><author_url>https://classicalchristian.org/classis/author/jsells/</author_url><title>Using Euclid to Teach Geometry - Classis</title><type>rich</type><width>600</width><height>338</height><html>&lt;blockquote class="wp-embedded-content" data-secret="1Wf43Pp8CK"&gt;&lt;a href="https://classicalchristian.org/classis/using-euclid-to-teach-geometry/"&gt;Using Euclid to Teach Geometry&lt;/a&gt;&lt;/blockquote&gt;&lt;iframe sandbox="allow-scripts" security="restricted" src="https://classicalchristian.org/classis/using-euclid-to-teach-geometry/embed/#?secret=1Wf43Pp8CK" width="600" height="338" title="&#x201C;Using Euclid to Teach Geometry&#x201D; &#x2014; Classis" data-secret="1Wf43Pp8CK" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"&gt;&lt;/iframe&gt;&lt;script type="text/javascript"&gt;
/* &lt;![CDATA[ */
/*! This file is auto-generated */
!function(d,l){"use strict";l.querySelector&amp;&amp;d.addEventListener&amp;&amp;"undefined"!=typeof URL&amp;&amp;(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&amp;&amp;!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i&lt;o.length;i++)o[i].style.display="none";for(i=0;i&lt;a.length;i++)s=a[i],e.source===s.contentWindow&amp;&amp;(s.removeAttribute("style"),"height"===t.message?(1e3&lt;(r=parseInt(t.value,10))?r=1e3:~~r&lt;200&amp;&amp;(r=200),s.height=r):"link"===t.message&amp;&amp;(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&amp;&amp;n.host===r.host&amp;&amp;l.activeElement===s&amp;&amp;(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r&lt;s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document);
//# sourceURL=https://classicalchristian.org/classis/wp-includes/js/wp-embed.min.js
/* ]]&gt; */
&lt;/script&gt;
</html><thumbnail_url>https://classicalchristian.org/classis/wp-content/uploads/2025/07/Who-was-Euclid-fig-3-e1749497670311.jpeg</thumbnail_url><thumbnail_width>640</thumbnail_width><thumbnail_height>320</thumbnail_height><description>First published in&#xA0;Classis Volume XVIII, No. 2 Much has been written in the classical Christian school movement about the Great Books, the use of original sources, and the importance of Latin and Greek, but where does mathematics fit in? A study of Euclid&#x2019;s Elements, the original geometry textbook, would seem like a good place to [&hellip;]</description></oembed>
