Compound of two great retrosnub icosidodecahedra

The compound of two great retrosnub icosidodecahedra is a uniform polyhedron compound. It's composed of the 2 enantiomers of the great retrosnub icosidodecahedron.

Compound of two great retrosnub icosidodecahedra
Type	Uniform compound
Index	UC72
Polyhedra	2 great retrosnub icosidodecahedra
Faces	40+120 triangles, 24 pentagrams
Edges	300
Vertices	120
Symmetry group	icosahedral (Ih)
Subgroup restricting to one constituent	chiral icosahedral (I)

3D model of a compound of two great retrosnub icosidodecahedra

References

• Skilling, John (1976), "Uniform Compounds of Uniform Polyhedra", Mathematical Proceedings of the Cambridge Philosophical Society, 79 (3): 447–457, Bibcode:1976MPCPS..79..447S, doi:10.1017/S0305004100052440, MR 0397554, S2CID 123279687.