菱形三十面体
1. Rhombic triacontahedronIn geometry, the rhombic triacontahedron is a convex polyhedron with 30 rhombic faces. It is an Archimedean dual solid, or a Catalan solid. It is the polyhedral dual of the icosidodecahedron, and it is a zonohedron. The ratio of the long diagonal to the short diagonal of each face is exactly equal to the golden ratio, φ, so that the acute angles on each face measure 2 tan(1/φ) = tan(2), or approximately 63.43°. A rhombus so obtained is called a golden rhombus.
Read “Rhombic triacontahedron” on English Wikipedia
Read “菱形三十面体” on Japanese Wikipedia
Read “Rhombic triacontahedron” on DBpedia
Read “Rhombic triacontahedron” on English Wikipedia
Read “菱形三十面体” on Japanese Wikipedia
Read “Rhombic triacontahedron” on DBpedia
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