Grand 120-cell
In geometry, the grand 120-cell or grand polydodecahedron is a regular [star 4-polytope] with Schläfli symbol. It is one of 10 regular Schläfli-Hess polytopes.
It is one of four regular star 4-polytopes discovered by Ludwig Schläfli. It is named by John [Horton Conway], extending the naming system by Arthur Cayley for the Kepler-Poinsot solids.
Related polytopes
It has the same edge arrangement as the 600-cell, icosahedral 120-cell and the same face arrangement as the great 120-cell.| H4 | - | F4 |
| H3 | A2 / B3 / D4 | A3 / B2 |
It could be seen as another 4D analogue of the three-dimensional great dodecahedron due to being a pentagonal polytope with enlarged facets.