19-2 gyrochoron

The 19-2 gyrochoron, also known as mobius 19, is a convex isochoric polychoron and member of the gyrochoron family with 19 ridge-sextitruncated edge-truncated tetrahedra as cells. It can also be constructed as the 19-9 gyrochoron.

Each cell of this polychoron has mirror symmetry, with 2 heptadecagons, 14 tetragons, and 2 triangles for faces, and shares a face with every other cell.