Lecture content: - Fundamental notions of triangulation as a method for determining the geodetic basic points. - Designing, stabilization and signalization of trigonometric points. - Methods for measuring lines and angles. - Observing lines from eccentric standpoints, and centralizing them. - Reducing lines sensitive to eccentric signals. - Fundamentals in calculating in Cartesian coordinate system. - Determining approximate coordinates. -Fundamentals of trilateration. - Indirect equalization. Equations of repairs of different measured quantities. - Conditional equalization-linear model and estimates of the smallest squares. Practice content: Practical application of the presented concepts from lectures.