在立体几何的求积问题中,割补法是一种常用的方法.我们常常把不熟悉或者难以体现直观性的几何体通过割补法,转化为比较熟悉、直观性更好的几何体.例如,把斜棱柱割补成直棱柱、把三棱柱补成平行六面体、把三棱锥补成三棱柱或平行六面体、把多面体切割成锥体(特别是三棱锥)、把不 In the quadrature geometry quadrature problem, the shuffling method is a commonly used method. We often turn geometry that is unfamiliar or hardly intuitive, through cloning, into more familiar and intuitive geometry. For example, The oblique prism is cut into a straight prism, a triangular prism is made into a parallelepiped, a triangular pyramid is made into a triangular prism or a parallelepiped, a polyhedron is cut into a cone (especially a triangular pyramid), and no