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Great triambic icosahedron
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Great triambic icosahedron : ウィキペディア英語版
Great triambic icosahedron

In geometry, the great triambic icosahedron and medial triambic icosahedron are visually identical dual uniform polyhedra. The exterior surface also represents the De2f2 stellation of the icosahedron. The only way to differentiate these two polyhedra is to mark which intersections between edges are true vertices and which are not. In the above images, true vertices are marked by gold spheres.
The 12 vertices of the convex hull matches the vertex arrangement of an icosahedron.
== Great triambic icosahedron ==
The great triambic icosahedron is the dual of the great ditrigonal icosidodecahedron, U47. It has 20 inverted-hexagonal faces, shaped like a three-bladed propeller. It has 32 vertices: 12 exterior points, and 20 hidden inside. It has 60 edges.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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