 Regular icosahedron (source code)

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= Regular icosahedron
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A <regular icosahedron> is a <Platonic solid> with twenty equilateral triangular faces, twelve vertices and thirty edges. Five faces meet at each vertex. Its orientation-preserving <rotational symmetry> has order sixty: the <orbit-stabilizer theorem> gives twenty faces times the three <rotations> stabilizing a chosen face.

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