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解题过程中.如果在已知条件下可能出现各种不同情况.就应针对不同情况,分别采取相应的对策,这种根据不同情况逐一解决的思想就是分类的思想.本文略举数例谈谈分类思想在解几何题中的应用. 例1 已知△ABC各边的长恰是方程组
In the course of solving a problem, if there are different situations that may occur under known conditions, corresponding countermeasures should be taken for different situations. The idea of solving one by one according to different situations is the idea of classification. Talk about the application of classification ideas in solving geometric problems. Example 1 It is known that the length of each side of △ABC is exactly the equations