体积法是处理立体几何问题的重要方法.在高中数学竞赛中,利用体积法解题形式简洁、构思容易,内涵深刻,应用广泛,备受青睐.几何体的体积包括基本几何体的体积计算、等积变换等方法,同时有以下常用方法和技巧:(1)转移法:利用祖咂原理或等积变换,把所求几何体转化为与它等底、等高的几何体的体积.(2)分割求和法:把所求几何体分割成基本几何 The volume method is an important method to deal with the problem of solid geometry. In the high school math competition, the use of volume method to solve the problem is simple, easy to design, connotation is profound, widely used, favored. The volume of the geometry includes the volume calculation of the basic geometry, equal volume Transformation and other methods, at the same time the following common methods and techniques: (1) transfer method: the use of ancestral hall principle or equal-area transformation, the geometry of the request is transformed into the volume of the geometric body with the same height, etc. (2) Sum: Divide the geometry you want into basic geometry