动态几何题一般的解题方法是 :对于定点或定值的问题 ,首先在特殊 (极端 )情形中求出这个不变量 ,然后转化为常规的论证题进行论证 .对于探索数量关系的问题 ,要善于模仿、类比和转化甚至创新 ,尤其要考虑运动中不同的情形和应运用分类的思想方法 .本文现略举数例以分析说明 .1 The general problem solving method for dynamic geometry problems is: for fixed-point or fixed-value problems, first find this invariant in a special (extreme) situation, and then turn it into a regular argument for argumentation. To explore the issue of quantity relations, Good at imitating, analogy and transformation or even innovation, especially considering the different situations in sports and the methods of thinking that should be applied to classification. Here are a few examples to illustrate.