Greek Mystic Geometry

Pentagram

The five pointed star is Important because it contains segment lengths whose ratio is the golden ratio: approximately .618 or 1.618

This symbol has been slandered and corrupted and is today considered and used as a symbol of satanism.

The Platonic Solids Tetrahedron, Cube (Hexahedron), Octahedron, Dodecahedron and Icosahedron Some sources give Pythagoreans credit for discovering the Dodecahedron.  These solids represent the five elements of earth, water, fire, air and spirit.  They also represent chakras of the human body.  The ancient Greeks used a five chakra system as opposed to the seven chakra esoteric Hindu/Buddhist system popular in the west today.  The platonic solids can be used for visualization during Chakra Based Meditation Techniques.

The Tetraktys Consists of ten circles arranged in the shape of an equilateral triangle.  The base of the triangle has 4 circles, the next higher level has 3 circles, then 2 circles, then 1 circle, as you move higher.  The tetraktys is an ancient Pythagorean symbol encoding certain whole number musical ratios which when played on an instrument stimulate energy movement in the body and results in spiritual development.