A polytope is a generalization of a polyhedron to more than three dimensions.

=5, there are only three regular convex polytopes: the hypercube, cross polytope, and regular simplex, which are analogs of the cube, octahedron, and tetrahedron." style="margin-top: 7px;" />

120-cell | 16-cell | 24-cell | 600-cell | cross polytope | face | facet | hypercube | incidence matrix | line segment | pentatope | point | polychoron | polygon | polyhedron | polyhedron vertex | polytope edge | polytope stellations | primitive polytope | ridge | simplex | tesseract | uniform polychoron

high school level