This article is about measurement by the use of triangles: for other usages of the term "triangulation", see triangulation (disambiguation).
In trigonometry and elementary geometry, triangulation is the process of finding a distance to a point by calculating the length of one side of a triangle, given measurements of angles and sides of the triangle formed by that point and two other reference points.
Many of these surveying problems involve the solution of large meshes of triangles, with hundreds or even thousands of observations. Complex triangulation problems involving real-world observations with errors require the solution of large systems of simultaneous equations to generate solutions.
In trigonometry and elementary geometry, triangulation is the process of finding a distance to a point by calculating the length of one side of a triangle, given measurements of angles and sides of the triangle formed by that point and two other reference points.
The sum of the angles of a triangle is π rad or 180 degrees.
In the social sciences, triangulation is often used to indicate that more than one method is used in a study with a view to double (or triple) checking results.
Another definition of "triangulation" which is commonly used in the social sciences is the description of when a person, either intentionally or unintentionally pits two others against each other to achieve a desired result or outcome.
Triangulation is also used in instances where goods and services are traded from one nation to another, using an intermediate nation.
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