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小星型十二面体
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Wikipedia definition
1. Small stellated dodecahedron​In geometry, the small stellated dodecahedron is a Kepler-Poinsot polyhedron, with Schläfli symbol {5/2,5}. It is one of four nonconvex regular polyhedra. It is composed of 12 pentagrammic faces, with five pentagrams meeting at each vertex. It shares the same vertex arrangement as the convex regular icosahedron. It also shares the same edge arrangement as the great icosahedron. It is considered the first of three stellations of the dodecahedron.
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