In the Shri Vidya school of Hindu tantra, the Sri Yantra ("sacred instrument"), also Sri Chakra is a diagram formed by nine interlocking triangles that surround and radiate out from the central (bindu) point.
The Sri Yantra in the Shri Vidya school of Hindu tantra is a symbolic representation known as the "sacred instrument" or Sri Chakra, consisting of nine interconnected triangles that emanate from a central focal point.