Polyhedron
3D shape with flat faces, straight edges and sharp corners / From Wikipedia, the free encyclopedia
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In geometry, a polyhedron (plural polyhedra or polyhedrons; from Greek πολύ (poly-) 'many', and εδρον (-hedron) 'base, seat') is a three-dimensional shape with flat polygonal faces, straight edges and sharp corners or vertices.
3D shape with flat faces, straight edges and sharp corners
![]() Regular tetrahedron |
![]() Small stellated dodecahedron |
![]() Icosidodecahedron |
![]() Great cubicuboctahedron |
![]() Rhombic triacontahedron |
![]() A toroidal polyhedron |
A convex polyhedron is the convex hull of finitely many points, not all on the same plane. Cubes and pyramids are examples of convex polyhedra.
A polyhedron is a 3-dimensional example of a polytope, a more general concept in any number of dimensions.