ThoughtThrill
Where math gets interesting
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Four triangles, the smallest solid that closes up in three dimensions.
Platonic solids
Six squares, and the only Platonic solid that tiles space on its own.
Eight triangles. Its face centres are the corners of a cube.
Twelve pentagons, the solid Plato assigned to the cosmos itself.
Twenty triangles, as many faces as a Platonic solid can carry.
A cube passes clean through a tunnel drilled in a cube of the same size.
Passing through
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