: Mathématiques: polyhedron

geometry > geometric figure > polyhedron

polyhedron

In geometry, a polyhedron (PL: polyhedra or polyhedrons; from Greek πολύ (poly-) 'many', and ἕδρον (-hedron) 'base, seat') is a three-dimensional shape with flat polygonal faces, straight edges and sharp corners or vertices.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Polyhedron)

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