1) Measure by using trigonometry 2) Measure using trigonometry 3) Polygon 4) Polygonal shape 5) Survey by triangulation 
• (v. t.) To make triangular, or three-cornered. • (v. t.) To divide into triangles; specifically, to survey by means of a series of triangles properly laid down and measured.
[adj] - composed of or marked with triangles 2. [v] - divide into triangles or give a triangular form to 3. [v] - measure by using trigonometry 4. [v] - survey by triangulation
triangulate, triangulates, triangulated, triangulating 1. To divide into triangles. 2. To survey by triangulation. 3. To make triangular. 4. To measure by using trigonometry.
adjective composed of or marked with triangles