Great ditrigonary icosidodecahedral antiprism

The great ditrigonary icosidodecahedral antiprism or gidtidap, is a nonconvex uniform polychoron that consists of 2 great ditrigonary icosidodecahedra, 12 pentagonal antiprisms, and 40 tetrahedra. Each vertex joins 1 great ditrigonary icosidodecahedron, 3 pentagonal antiprisms, and 4 tetrahedra.

The pentagonal antiprism cells pass through the center of the polychoron, making it a hemipolychoron.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the small ditrigonary icosidodecahedral antiprism.