Definitions
retrosnub

Small retrosnub icosicosidodecahedron

In geometry, the small retrosnub icosicosidodecahedron is a nonconvex uniform polyhedron, indexed as U72.

Cartesian coordinates

Cartesian coordinates for the vertices of a small retrosnub icosicosidodecahedron are all the even permutations of

(±½(−1/τ−√(3τ−2)), 0, ±½(3−τ√(3τ−2)))
(±½(1/τ−√(3τ−2)), ±1, ±½(1+2/τ−τ√(3τ−2)))
(±½(τ2−√(3τ−2)), ±1/τ, ±½(1−τ√(3τ−2)))

where τ = (1+√5)/2 is the golden ratio (sometimes written φ).

See also

External links

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