(yoga) Trikonasana.

(mathematical analysis) The inequality that states that the magnitude of the sum of two vectors is less than or equal to the sum of the magnitudes of the vectors, or any equivalent inequality in other spaces.

(American spelling) Alternative form of colour triangle

(British spelling) A plane triangular graph on which are drawn all the colours that can be made by the additive mixing of red blue and green; these three primary colours are at the apices, while white is in the middle.

A situation in which two suitors vie or compete for the love of the same person.

(geometry) A triangle having each of its three sides of different lengths.

(geometry) A triangle having all three sides equal.

(geometry) A triangle having at least two sides equal.

(geometry) A triangle having a right angle as one of its interior angles.

(geometry) A triangle all of the angles of which are acute.