A dodecahedron is composed of 12 regular pentagonal faces, with three meeting at each vertex.

It has pentagonal faces, and 3 pentagons around each vertex.

Each of its pentagonal faces has three 120 and two 90 angles.

This transparent image shows its three square, and six congruent irregular pentagonal faces.

There are 120 cells, 720 pentagonal faces, 1200 edges, and 600 vertices.

Geometry implies that each pentagonal face should be bounded by five hexagons.

Each of its pentagonal faces has four 120 and one 60 angle.

It's composed of 60 self-intersecting pentagonal faces, 150 edges and 92 vertices.

It has 6 pentagonal faces, 15 edges, and 10 vertices.

The two pentagonal faces of either shape can be augmented with pyramids to form the icosahedron.