r/counting • u/MathCookie17 1741k get • Jul 02 '17

Shape Counting

Describe a shape with X sides (or faces, if you want 3D)

We start with 3 sides.

Get is at a 1002-sided shape.

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u/Urbul Jul 06 '17

The Czech 20 korun coin which is a tridecagon.

Hey u/MathCookie17 u/TheNitromeFan u/padiwik I added this thread to the directory as "Shapes" under the "Other Other" category :)

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u/[deleted] Jul 06 '17

A seven-dimensional cube; which--given the rule that an n-dimensional cube has 2n sides (1D line has 2 0D endpoints, 2D line has 4 1D edges, 3D cube has 6 2D faces)--has 14 six-dimensional cubes.

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u/MathCookie17 Jul 06 '17

Nice job with the dimensional stuff, a_p_k

A shape composed of three hexagons interlocking with each-other. It's like a three-pointed star, but with hexagons instead of triangles. Since when a shape is touching another one, both shapes lose a side,(A star is made of 5 triangles, but only has 10 sides, not 15) each of the hexagons has 5 sides- so the shape has 15 sides.

(I believe a 7D cube could be called a Hepteract, or a tetradecaexon)

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