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 represent 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 (akoa) (Sanskrit name for a Hexagram) 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.[citation needed]
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 vict ...more

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 represent 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 (akoa) (Sanskrit name for a Hexagram) 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.[citation needed]
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 vict ...more

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 represent chakras, with each petal representing a psychic propensity (or vritti) associated with that chakra

Squares, triangles, circles and floral patterns

Triangles and dots