When the truss is large such a calculation of a relative displacement by the laws of geometry becomes excessively tedious.
当桁架很大时，根据几何学定律来计算相对位移就会变成很麻烦的事。
2
As to the method of calculating the relative movement force and total fault displacement of two walls of a fault, there are the method of descriptive geometry and the method of diagram analysis.
Solutions to problems in descriptive geometry such as finding the relative positions between straight lines between a straight line and a plane, and between planes are found by computerized graphics.