Compound of five great icosahedra explained

bgcolor=#e7dcc3 colspan=2Compound of five great icosahedra
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TypeUniform compound
IndexUC53
Polyhedra5 great icosahedra
Faces40+60 Triangles
Edges150
Vertices60
Symmetry groupicosahedral (Ih)
Subgroup restricting to one constituentpyritohedral (Th)
This uniform polyhedron compound is a composition of 5 great icosahedra, in the same arrangement as in the compound of 5 icosahedra.

The triangles in this compound decompose into two orbits under action of the symmetry group: 40 of the triangles lie in coplanar pairs in icosahedral planes, while the other 60 lie in unique planes.

References