What is Gann's square of nine?

Each geometrical angle (which is really a line extended into space) divides time and price into proportionate parts. The most important angle Gann called the 1x1 or the 45° angle, which he said represented one unit of price for one unit of time. If you draw a perfect square and then draw a diagonal line from one corner of the square to the other, you have illustrated the concept of the 1x1 angle, which moves up one point per day. Other important angles were the 2x1 (moving up two points per day), the 3x1, the 4x1, the 8x1, and the 16x1. When the angles are drawn in a group, they are often called a Gann fan. Angles may either be drawn ascending from price bottoms, as just described, or descending from price tops.