New posts in Polyhedra

Why does a convex polyhedron being vertex-, edge-, and face-transitive imply that it is a Platonic solid?

Proof that set is not a polyhedron.

Conceptual reason for why the volume of an ocahedron is four times the volume of a tetrahedron

Conceptual reason why height of unit tetrahedron is the same as the distance between opposite faces of an octahedron?

Why is the euler characteristic of a sphere 2?

A property of a linear image of the cube

What is the name of this hexagon/pentagon polyhedron?

Why is the permutohedron simple?

Two people take turns coloring a convex polyhedron

Count the number of shapes in a polyhedron.