18-3 gyrochoron

The 18-3 gyrochoron, also known as the hexagon tricoil, is a convex isochoric polychoron and member of the gyrochoron family with 18 ridge-tritruncated tetragonal antiwedges as cells.

Each cell of this polychoron has bilateral symmetry, with 2 mirror-symmetric decagons, 6 kites, and 4 isosceles triangles for faces.