 In four dimensions, the 10 regular star polychora are called the Schläfli–Hess polychora.Analogous to the regular star polyhedra, these 10 are all composed of facets which are either one of the five regular Platonic solids or one of the four regular star Kepler–Poinsot polyhedra.For example, the great grand stellated 120-cell, projected orthogonally into 3-space, looks like this