在近几年各地的中考试题中,动态几何问题一直是考试的热点和难点.从题型上分,动态几何主要有动点、动线和动图这三类,从运动的形式上看,有平移、翻折、旋转等.动态几何问题是学生学习中的难点,一方面,它主要以几何图形为载体,运动变化为主线,灵活运用数形结合,对多个知识点以及多种解题思想进行考查.另一方面,这类题综合性强,能力要求高,要求学生能灵活运用已有知识对题目进行分析、探索、转换,其思想 In recent years all over the examination questions, the dynamic geometry problem has been a hot and difficult exam.From the question points, dynamic geometry mainly has three kinds of moving point, moving line and moving picture, from the movement in the form of point of view, There are translation, folding, rotation, etc. Dynamic geometry problem is the difficulty of student learning, on the one hand, it is mainly based on geometry as the carrier, the main line of movement changes, the use of flexible combination of numbers, multiple knowledge points and multiple solutions On the other hand, such questions are comprehensive, demanding ability, require students to have the flexibility to use existing knowledge to analyze the problem, to explore, change, the idea