Enneagram

The Enneagram of Personality—usually known simply as the Enneagram —is a particular application of the Fourth Way enneagram figure. The Enneagram system describes nine distinct personality types and their interrelationships, mapped around an ancient symbol of perpetual motion. This is now the most well-known use of this particular enneagram figure.

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