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<p>a regular hyperbolic icosagon.</p>

<p><big> Platonic solids </big></p>
<p>The largest number of faces a <a href="page.php?w=Platonic_solid">Platonic solid</a> can have is twenty faces, which make up a regular <a href="page.php?w=Regular_icosahedron">icosahedron</a>. A <a href="page.php?w=dodecahedron">dodecahedron</a>, on the other hand, has twenty vertices, likewise the most a regular polyhedron can have. This is because the icosahedron and dodecahedron are <a href="page.php?w=Dual_polyhedron">duals</a> of each other.</p>

<p><big> Other fields </big></p>
<p><big> Science </big></p><p>
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