Heptagonal duotruncatoaltertegum

The heptagonal duotruncatoaltertegum is a convex isochoric polychoron and member of the duotruncatoaltertegum family with 196 monotruncated kite pyramids as cells.

Each cell of this polychoron has mirror symmetry, with 1 mirror-symmetric pentagon, 2 kites, 1 isosceles triangle, and 2 scalene triangles for faces.