Shapes and patterns commonly employed in yantra include squares, triangles, circles and floral patterns but may also include more complex and detailed symbols, for instance:
The lotus flower typically represents chakras, with each petal representing a psychic propensity (or vritti) associated with that chakra;
A dot, or bindu, represents the starting point of creation or the infinite, unexpressed cosmos;
The shatkona (şaţkoņa) (Sanskrit name for a Hexagram) is composed of a balance between:
An upwards triangle which according to Tantra denotes energy, or more specifically action and service (seva). It may also denote spiritual aspiration, the element of fire, or Shiva. It is also said to represent the static substratum of the cosmos;
A downwards triangle which according to Tantra denotes spiritual knowledge. It may also denote the creative power of the cosmos, fecundity, the element of water, or Shakti;
A swastika represents good luck, welfare, prosperity or spiritual victory;
Bija mantras (usually represented as characters of Devanāgarī that correspond to the acoustic roots of a particular chakra or vritti).
Geometric element meanings:
Circle = Energy of the element water
Square = Energy of the element earth
Upward-facing Triangle = Energy of the element fire; energy
Downward-facing Triangle = Energy of the element water; knowledge
Diagonal line = Energy of the element air
Horizontal line = Energy of the element water
Vertical line = Energy of the element fire
Point = Energy of the element ether
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