Triangle

trl'ang-gl, n. math.) a plane figuie with three angles and three sides [music) an instrument of steel in the form of a triangle. [Fr.—L, tnangulum — tres, three, and angulus, an angle. See Angle.] Trlangled, tri'ang-gld, adj having three angles. Triangular, trl-ang'gu-lar, adj having three angles, —adv. Triangularly. Triangulate, irI-ang'gu-\St, v.t. to survey by means of a series of triangles.