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Rhombic triacontahedron -- Facts, Info, and Encyclopedia article__ *(Site not responding. Last check: 2007-10-09)* |

| | The ratio of the long diagonal to the short diagonal of each face is exactly equal to the (additional info and facts about golden ratio) golden ratio, φ, so that the (A mark (') placed above a vowel to indicate pronunciation) acute angles on each face measure 2 tan |

| | Being the dual of an (additional info and facts about Archimedean polyhedron) Archimedean polyhedron, the rhombic **triacontahedron** is face-uniform, meaning the (additional info and facts about symmetry group) symmetry group of the solid acts (additional info and facts about transitive) transitively on the set of faces. |

| | The rhombic **triacontahedron** forms the (hull of) the projection of a 6-dimensional (additional info and facts about hypercube) hypercube to 3 dimensions. |

| www.absoluteastronomy.com /encyclopedia/r/rh/rhombic_triacontahedron.htm (209 words) |