15-2 gyrochoron

The 15-2 gyrochoron, also known as mobius 15, is a convex isochoric polychoron and member of the gyrochoron family with 15 ridge-quadritruncated edge-truncated tetrahedra as cells. It can also be constructed as the 15-7 gyrochoron. Together with its dual, it is the second in an infinite family of pentagonal dihedral swirlchora.

Each cell of this polychoron has mirror symmetry, with 2 tridecagons, 10 tetragons, and 2 triangles for faces, and shares a face with every other cell.