Joined hexacosichoron

The joined hecatonicosachoron is a convex isochoric polychoron with 1200 triangular bipyramids as cells.

Isogonal derivatives
Substitution by vertices of these following elements will produce these convex isogonal polychora:
 * Triangular bipyramid (1200): Rectified hecatonicosachoron
 * Isosceles triangle (3600): Semi-uniform small rhombated hecatonicosachoron
 * Edge (720): Rectified hexacosichoron
 * Edge (2400): Semi-uniform small prismatotetracontoctachoron
 * Vertex (120): Hexacosichoron
 * Vertex (600): Hecatonicosachoron