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hexadecahedron
A hexadecahedron (or hexakaidecahedron) is a polyhedron with 16 faces. No hexadecahedron is regular; hence, the name is ambiguous. There are numerous topologically distinct forms of a hexadecahedron, for example the pentadecagonal pyramid, tetradecagonal prism and heptagonal antiprism.
==Convex hexadecahedra==
There are 387,591,510,244 topologically distinct ''convex'' hexadecahedra, excluding mirror images, having at least 10 vertices.〔(Counting polyhedra )〕 (Two polyhedra are "topologically distinct" if they have intrinsically different arrangements of faces and vertices, such that it is impossible to distort one into the other simply by changing the lengths of edges or the angles between edges or faces.)
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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