The Sri Yantra or Sri Chakra is a form of mystical diagram (yantra) used in the Shri Vidya school of Hindu tantra. It consists of nine interlocking triangles that surround a central point known as a bindu. These triangles represent the cosmos and the human body. Because of its nine triangles, Sri Yantra is also known as the Navayoni Chakra. When the two-dimensional Sri Yantra is represented in three dimensions, it is called a Maha Meru. Mount Meru derives its name from this shape. In addition to Mount Meru, all other yantras derive from the Sri Yantra.