In geometry, the great grand 120-cell or great grand polydodecahedron is a regular star 4-polytope with Schläfli symbol {5,5/2,3}. It is one of 10 regular Schläfli-Hess polytopes.
Related polytopes It has the same edge arrangement as the small stellated 120-cell.
See also List of regular polytopes Convex regular 4-polytope Kepler-Poinsot polyhedron – regular star polyhedron Star polygon – regular star polygons
References Edmund Hess, (1883) Einleitung in die Lehre von der Kugelteilung mit besonderer Berücksichtigung ihrer Anwendung auf die Theorie der Gleichflächigen und der gleicheckigen Polyeder [1]. H. S. M. Coxeter, Regular Polytopes, 3rd. ed., Dover Publications, 1973. ISBN 0-486-61480-8. John H. Conway, Heidi Burgiel, Chaim Goodman-Strauss, The Symmetries of Things 2008, ISBN 978-1-56881-220-5 (Chapter 26, Regular Star-polytopes, pp. 404–408) Klitzing, Richard. "4D uniform polytopes (polychora) o3o5/2o5x - gaghi".
External links Regular polychora Archived 2003-09-06 at the Wayback Machine Discussion on names Reguläre Polytope The Regular Star Polychora