30-11 step prism

The 30-11 step prism is a convex isogonal polychoron, member of the step prism family. It has 30 rhombic disphenoids and 120 phyllic disphenoids of two kinds as cells. Together with its dual, it is the ninth in an infinite family of triangular dihedral swirlchora and the fourth in an infinite family of hexagonal dihedral swirlchora.