A polyhedron (a flat-sided solid object) with 20 Faces.
When it is "regular" (side lengths are equal and angles are equal) it is one of the Platonic Solids
Play with one here:
A polyhedron (a flat-sided solid object) with 20 Faces.
When it is "regular" (side lengths are equal and angles are equal) it is one of the Platonic Solids
Play with one here: