Created by W.D. Gann, a method of predicting price movements through the relation of geometric angles in charts depicting time and price.

The ideal balance between time and price exists when prices move identically to time, which occurs when the Gann angle is at 45 degrees. In total, there are nine different Gann angles that are important for identifying trend lines and market actions. When one of these trend lines is broken, the following angle will provide support or resistance.