bgcolor=#e7dcc3 colspan=2 | Compound of two great icosahedra | |
---|---|---|
align=center colspan=2 | ||
Type | Uniform compound | |
Index | UC52 | |
Polyhedra | 2 great icosahedra | |
Faces | 16+24 triangles | |
Edges | 60 | |
Vertices | 24 | |
Symmetry group | octahedral (Oh) | |
Subgroup restricting to one constituent | pyritohedral (Th) |
The triangles in this compound decompose into two orbits under action of the symmetry group: 16 of the triangles lie in coplanar pairs in octahedral planes, while the other 24 lie in unique planes.
The great icosahedron, as a uniform retrosnub tetrahedron, is similar to these snub-pair compounds: compound of two icosahedra, compound of two snub cubes and compound of two snub dodecahedra.