Trig Pillars ,Triangulation and the Mapping of Ireland

Triangulation. Triangulation is a simple geometrically based process that makes accurate map-making possible. It works by determining the location and distance of a faraway object , by measuring angles to it from known points at either end of a fixed ,known ,baseline It is based on a system devised over two thousand years ago by Euclid, the father of geometry . Trigonometry (the study of triangles) emerged about the third century BC . It stated that a triangle has six parts—three sides and three angles,and it postulated that given almost any three of them--three sides, two sides and one [...]