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In geometry, a cuboctahedron is a polyhedron with 8 triangular faces and 6 square faces. A cuboctahedron has 12 identical vertices, with 2 triangles and 2 squares meeting at each, and 24 identical edges, each separating a triangle from a square. As such it is a quasiregular polyhedron, i.e. an Archimedean solid, being vertex-transitive and edge-transitive. Its dual polyhedron is the rhombic dodecahedron. ==Other names== *''Heptaparallelohedron'' (Buckminster Fuller) * *Fuller applied the name "Dymaxion" to this shape, used in an early version of the Dymaxion map. He also called it the "Vector Equilibrium".〔(Vector Equilibrium: R. Buckminster Fuller )〕 *With Oh symmetry, it is a ''rectified cube'' or ''rectified octahedron'' (Norman Johnson) *With Td symmetry, it is a ''cantellated tetrahedron''. *With D3d symmetry, it is a ''triangular gyrobicupola''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cuboctahedron」の詳細全文を読む スポンサード リンク
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