A surveying technique in which a region is divided into a series of triangular elements based on a line of known length so that accurate measurements of distances and directions may be made by the application of trigonometry.

• 三角测量法一种测量技术，通过将某一地区分成许多三角形，这些三角形是以一条已知长度的线为底，由此可通过使用平面直角三角形计算工具精确地测量距离和方向