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.
"I created this PDF guide and short video to go over a few Sacred Geometry symbols, their names and meanings - learn more and how to create your own Sacred Geometry artwork (click the image to watch)." By Skybox Creative