11-2 gyrochoron

The 11-2 gyrochoron, also known as mobius 11, is a convex isochoric polychoron and member of the gyrochoron family with 11 ridge-ditruncated edge-truncated tetrahedra as cells. It can also be constructed as the 11-5 gyrochoron. It is one of two isogonal polychora with 11 cells, the other is the 11-3 gyrochoron.

Each cell of this polychoron has mirror symmetry, with 2 mirror-symmetric enneagons, 6 kites, and 2 isosceles triangles for faces, and shares a face with every other cell.