In
geometry, the
small retrosnub icosicosidodecahedron is a nonconvex
uniform polyhedron, indexed as U
72.
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