Small triangular double triswirlprism

The triangular double triswirlprism is a convex isogonal polychoron that consists of 18 triangular antiprisms, 27 rhombic disphenoids, 108 phyllic disphenoids of two kinds and 108 irregular tetrahedra obtained as the convex hull of two orthogonal triangular-triangular triswirlprisms. However, it cannot be made uniform. Together with its dual, it is the second in an infinite family of triangular antiprismatic swirlchora.

CategoryI2(9)≀S2/6 symmetry