Dodecahedron

Plato associated the dodecahedron with the element that god used to arrange the constellations of the whole heaven. It was Aristotle that called this aether

The dodecahedron is a platonic solid made out of 12 congruent pentagons.
It has 30 edges and 20 vertices. At each vertex 3 faces meet.

 

 

 

It's net:

To view the 3D version:
https://www.mathsisfun.com/definitions/dodecahedron.html