Joined hecatonicosachoron

The joined hexacosichoron is a convex isochoric polychoron with 720 pentagonal bipyramids as cells.

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