Polyhedron

Some polyhedra

Dodecahedron
(Regular polyhedron)

Small stellated dodecahedron
(Regular star)

Icosidodecahedron
(Uniform)

Great cubicuboctahedron
(Uniform star)

Rhombic triacontahedron
(Uniform dual)

Elongated pentagonal cupola
(Convex regular-faced)

Octagonal prism
(Uniform prism)

Square antiprism
(Uniform antiprism)
Most dice are polyhedra.

A polyhedron (polyhedra or polyhedrons if more than one) is a geometrical shape. It is a 3D shape with flat faces, and straight edges. Each face is a polygon surrounded by edges. Usually it is known by the number of faces, corners, or edges it has.

There are many groups of polyhedra, which can either be only a small set, or can be infinite. Prisms, pyramids, antiprisms, and bipyramids are groups of polyhedra.

A regular polyhedron has faces that are all the same, corners that are all the same, and edges that are all the same. A uniform polyhedron can have one or two kinds of its parts be all the same.


Polyhedron

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