They are geometrical forms which are said to act as a template from which all life springs. They are named after the ancient Greek philosopher Plato. To the Greeks, these solids symbolized fire, earth, air, spirit (or ether) and water.
The Dodecahedron is a platonic solid containing 12 faces with 20 vertices and 30 edges - 5 intersecting cubes. Symbol in Sacred Geometry of Ether (Aether) or the universe/heaven. from geometrydaily: Dodecahedron - minimal geometric composition