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用平面几何的知识来研究解决立体几何的问题,是我们解决立体几何的基本思想,体现这一思想的方法是类比和转化,本文归纳了如何掌握立体几何问题转化为平面几何问题的几种常见方法。
Using plane geometry knowledge to study and solve the problem of solid geometry is our basic idea to solve the problem of solid geometry. The method of reflecting this idea is analogy and transformation. This article summarizes how to master several common geometric problem of converting geometric problem into plane geometry method.