多球是一个饶有兴趣的数学问题,它毋需补充新概念和理论,学习者只须用观察和想象,加之推理和演算,问题就可以得到圆满的解决.多球涉及到多个球和几何体的定位,从众多几何量中捕捉适宜的等量关系,可以培养学生的空间想象能力.常见有多球与平面、多球与二面角、多球与旋转体、多 Multi-ball is a mathematics problem that is of great interest. It requires the addition of new concepts and theories. The learner only needs to observe and imagine, plus reasoning and calculus, the problem can be solved satisfactorily. The multi-ball involves multiple balls and The positioning of geometry, from the many geometric quantities to capture the appropriate equal relationship, can cultivate students’ spatial imagination. Commonly there are many balls and planes, multiple balls and dihedral angles, multiple balls and rotating bodies, and more