Dodecahedron Day - May 12
Today is a day to celebrate the regular dodecahedrons. The regular dodecahedron is one of the platonic solids.
A regular dodecahedron is formed by putting 12 identical equal-sided pentagons together into a convex polyhedron. It will have 20 vertices, 12 faces, and 30 edges. (A non-regular dodecahedron can consist of any polyhedron with 12 faces with a variety of vertices and edges.)
We celebrate dodecahedrons on May (5th month) 12 because it's composed of 12 pentagons (which have 5 sides).
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DTR, CC BY-SA 3.0 <http://creativecommons.org/licenses/by-sa/3.0/>, via Wikimedia Commons |
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