Polyhedron

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Some Polyhedra
POV-Ray-Dodecahedron.svg
Dodecahedron
(Regular polyhedron)
Small stellated dodecahedron.png
Smaa stellated dodecahedron
(Regular star)
Icosidodecahedron.png
Icosidodecahedron
(Uniform/Quasiregular)
Great cubicuboctahedron.png
Great cubicuboctahedron
(Uniform star)
Rhombictriacontahedron.svg
Rhombic triacontahedron
(Uniform/Quasiregular dual)
Elongated pentagonal cupola.png
Elangatit pentagonal cupola
(Convex regular-faced)
Octagonal prism.png
Octagonal prism
(Uniform prism)
Square antiprism.png
Square antiprism
(Uniform antiprism)

In geometry, a polyhedron (plural polyhedra or polyhedrons) is a solid in three dimensions wi flat faces an straicht edges. The wird polyhedron comes frae the Classical Greek πολύεδρον, as poly- (stem of πολύς, "mony") + -hedron (form of έδρα, "base", "seat", or "face").

A polyhedron is a 3-dimensional example o the mair general polytope in ony nummer o dimensions.