Great transitional 12-5 double step prism

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Great transitional 12-5 double step prism
File:Great transitional 12-5 double step prism.png
Cells24+48 phyllic disphenoids, 12+12 rhombic disphenoids, 12 chiral digonal scalenohedra
Faces48+48+48+48+48 scalene triangles
Vertex figure13-vertex polyhedron with 3 tetragons and 16 triangles
Measures (edge length 1)
Central density1
Related polytopes
DualGreat transitional 12-5 bigyrochoron
Abstract & topological properties
Euler characteristic0
SymmetryS2(I2(12)-5)×2R, order 48

The great transitional 12-5 double step prism is a convex isogonal polychoron that consists of 12 chiral digonal scalenohedra, 24 rhombic disphenoids of two kinds, and 72 phyllic disphenoids of two kinds. 3 digonal scalenohedra, 4 rhombic disphenoids, and 12 phyllic disphenoids join at each vertex. It can be obtained as the convex hull of two orthogonal 12-5 step prisms.

The ratio between the longest and shortest edges is 1: ≈ 1:2.73861.

Vertex coordinates[edit | edit source]

Coordinates for the vertices of a great transitional 12-5 double step prism are given by:

  • (a*sin(2πk/12), a*cos(2πk/12), b*sin(10πk/12), b*cos(10πk/12)),
  • (b*sin(2πk/12), b*cos(2πk/12), a*sin(10πk/12), a*cos(10πk/12)),

where a = (2-3)/2, b = (2+3)/2 and k is an integer from 0 to 11.

External links[edit | edit source]