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tetradecahedron
A tetradecahedron is a polyhedron with 14 faces. There are numerous topologically distinct forms of a tetradecahedron, with many constructible entirely with regular polygon faces.
A tetradecahedron is sometimes called a tetrakaidecahedron.〔(Tetradecahedron )〕〔(Tetradecahedron )〕 No difference in meaning is ascribed.〔(Tetrakaidecahedron )〕〔(Tetrakaidecahedron )〕 The Greek word ''kai'' means 'and'.
==Convex==
There are 1,496,225,352 topologically distinct ''convex'' tetradecahedra, excluding mirror images, having at least 9 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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