What is "equiangular"

Equiangular \E`qui*an"gu*lar\, a. [Equi- + angular. Cf. Equangular.] Having equal angles; as, an equiangular figure; a square is equiangular.

Equiangular spiral. (Math.) See under Spiral, n.

Mutually equiangular, applied to two figures, when every angle of the one has its equal among the angles of the other.

1650s; see equi- + angular. French équiangle is from 16c.

a. (context geometry English) Of a polygon, having all interior angles equal. This is not necessarily a regular polygon, since that would also be equilateral; a rectangle is equiangular but not equilateral, unless it is a square.

adj. having all angles equal

In geometry, the term equiangular relates to having angles of equal measure. In particular:

• Equiangular polygon – a polygon with equal angles.
• The Logarithmic spiral or equiangular spiral, a type of geometric spiral.
• Equiangular lines – a set of lines where every pair of lines makes the same angle.