Enneagram

From Wikipedia, the free encyclopedia

For the use of an Enneagram with personality issues, see Enneagram of Personality.

For the use of an Enneagram in relation to the teachings of G. I. Gurdjieff and his followers, see Fourth Way Enneagram.

In geometry, an enneagram is a nine-pointed geometric figure. The term derives from two Greek words - ennea (nine) and grammos (something written or drawn).

Enneagrams shown as sequential stellations

The Enneagram of Personality and Fourth Way Enneagram use an irregular enneagram, constructed from a triangle and an irregular hexagram.

[edit] Regular enneagrams

A regular enneagram (a nine-sided star polygon), is constructed using the same points as the regular enneagon but connected in fixed steps. It has two forms, represented by a Schläfli symbol as {9/2} and {9/4}, connecting every second and every fourth points respectively.

There is also a star figure, {9/3}, made from the regular enneagon points but connected as a compound of three equilateral triangles.^[1] ^[2] , this last is sometimes also called a nonagram.