Victoria Stuart 🇨🇦 🏳️⚧️<p>A New Pyramid-Like Shape Always Lands the Same Side Up<br><a href="https://www.quantamagazine.org/a-new-pyramid-like-shape-always-lands-the-same-side-up-20250625" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">quantamagazine.org/a-new-pyram</span><span class="invisible">id-like-shape-always-lands-the-same-side-up-20250625</span></a><br><a href="https://news.ycombinator.com/item?id=44381297" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">news.ycombinator.com/item?id=4</span><span class="invisible">4381297</span></a></p><p>* tetrahedron: simplest Platonic solid<br>* mathematicians made one that’s stable only on one side<br>* confirms decades-old conjecture</p><p><a href="https://en.wikipedia.org/wiki/Platonic_solid" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">en.wikipedia.org/wiki/Platonic</span><span class="invisible">_solid</span></a></p><p><a href="https://mastodon.social/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a> <a href="https://mastodon.social/tags/polyhedra" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>polyhedra</span></a> <a href="https://mastodon.social/tags/tetrahedron" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tetrahedron</span></a> <a href="https://mastodon.social/tags/balance" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>balance</span></a> <a href="https://mastodon.social/tags/JohnConway" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JohnConway</span></a> <a href="https://mastodon.social/tags/PlatonicSolids" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PlatonicSolids</span></a></p>
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#tetrahedron
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foldworks<p>I tried to model these origami as transformation between cube and octahedron in Geogebra, but ended up with this instead<br><a href="https://mathstodon.xyz/tags/MathArt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathArt</span></a> <a href="https://mathstodon.xyz/tags/geometry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>geometry</span></a> <a href="https://mathstodon.xyz/tags/animation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>animation</span></a> <a href="https://mathstodon.xyz/tags/loop" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>loop</span></a> <a href="https://mathstodon.xyz/tags/geogebra" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>geogebra</span></a> <a href="https://mathstodon.xyz/tags/tetrahedron" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tetrahedron</span></a> <a href="https://mathstodon.xyz/tags/3d" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>3d</span></a></p>
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