Tell me what are aspects of polytopes from given text 
 1. A simplicial polytope is a polytope in geometry where each facet is a simplice.
2. As an illustration, a simplicial polyhedron in three dimensions with only triangular faces corresponds to a maximum planar network according to Steinitz's theorem.
3. They are simple polytopes topological dual.
4. Two-dimensional polygons or simplices are polytopes that are both simple and simplicial.