What is chain angle in surveying?

The method of measuring the chain angle of a framework of triangle being formed by making the station on the surface of the earth is called as triangulation.

• The triangles with angle in the range between 30 to120 degree is called as well conditioned triangles.
• An equilateral triangle (ideal triangle is the best well-conditioned triangle possible there each angle is 60 degrees.
• An ill-conditioned triangle is a triangle with an internal angle in range a > 120 and a < 30.