立体几何是高中数学的重要组成部分,是培养学生空间想象力和逻辑推理能力的必不可少的内容,也是高考的重点之一.立体几何中需要将几何体进行分割或添补,以便问题得到解决的方法,分别叫做分割法和补形法,统称为割补法.割与补的方法是数学中常用的一种独特方法,通过对几何体的割、补,能发现 Three-dimensional geometry is an important part of high school mathematics, is an indispensable part of students’ spatial imagination and logical reasoning ability, and also one of the key points of the college entrance examination.It is necessary to divide or add the geometry to the geometry in order to solve the problem Methods, respectively, called segmentation and the shape of the law, collectively referred to as the law of cut and cut and complement the method is commonly used in mathematics a unique method, through the geometry of the cut, make up, can be found