https://brainjam.ca/tessellations.html

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14<h1> Non-Euclidean Tessellations </h1>
15<p>
16Welcome to the non-Euclidean tessellations movie page.
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18<p>
19The term tessellate means 'fit together exactly a number of congruent tiles, leaving no spaces'.  The term non-Euclidean refers to a kind of geometry that goes beyond what we were taught in high school math.  This is a geometry where tiles have sides that are circular arcs, and they are congruent as long as their vertex angles correspond.
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23There's a good online introduction to these concepts in
24<a href="https://plus.maths.org/issue43/features/serieswright/">this article</a>.
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57<p>
58You can browse through a series of movies in the above widget, or you can browse through
59<a href="https://www.vimeo.com/album/82895"> a Vimeo Album</a>.
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62<p>
63Here's one of the movies broken down into a <a href="noneuclidean/slideshow/slideshow.html">high resolution slide show</a>.
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