Triangular-pentagonal tetraswirltegum

The triangular-pentagonal tetraswirltegum is a convex isochoric polychoron and member of the duoprismatic tetraswirltegum family with 60 identical cells.

Each cell of this polychoron has mirror symmetry, with 2 octagons, 6 tetragons, and 4 triangles for faces.