球是一种常见而又重要的几何体,以球与其他几何体的切与接为背景来设计问题,在近年的高考中备受青睐.本文举例介绍几种常见题型的解法,供参考.一、一般多面体与球的组合问题在一般多面体与球的问题中,主要有多点共球问题,只需从共球点和相关线段中找出球 Ball is a common and important geometry. It is designed with the background of the ball and other geometry cut and connected. It has been favored in the college entrance examination in recent years. This article gives an example of the solution of several common questions for reference. The problem of the combination of general polyhedron and the ball in the general polyhedron and ball problems, there are mainly multi-point common ball problems, only to find out the ball from the common sphere and related line segments.