1. A trigonometric method of determining the position of a fixed point from the angles to it from two fixed points of a known distance apart; useful in navigation
   "Surveyors used triangulation to map the mountainous terrain"
    
2. A method of surveying; the area is divided into triangles and the length of one side and its angles with the other two are measured, then the lengths of the other sides can be calculated
   "Surveyors used triangulation to accurately map the mountainous terrain"

Derived forms: triangulations

Type of: surveying, trig, trigonometry

Encyclopedia: Triangulation