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Compound of five icosahedra

The compound of five icosahedra is uniform polyhedron compound. It's composed of 5 icosahedra, rotated around a common axis. It has icosahedral symmetry I<sub>h</sub>.

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.

The compound of five icosahedra shares the same vertex arrangement of a nonuniform rhombicosidodecahedron.

Cartesian coordinates

Cartesian coordinates for the vertices of this compound are all the cyclic permutations of

(0, ±2, ±2τ)
(±τ<sup>−1</sup>, ±1, ±(1+τ<sup>2</sup>))
(±τ, ±τ<sup>2</sup>, ±(2τ−1))

where τ = (1+)/2 is the golden ratio (sometimes written φ).

References

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