纵观近几年各地的中考试题,坐标系中的几何问题备受命题者的青睐.这类题型把几何图形置于坐标系中,常常与函数联袂,把几何与代数知识融于一体,体现了数与形的有机结合,有效地考查了学生综合运用知识的能力.笔者对该类问题进行了分析、研究,发现解此类问题时常用一些基本知识点,掌握这些知识和规律,问题即能顺利解决.现对这些知识和方法整理、归纳如下. Throughout the examination questions all over the world in recent years, the geometric problems in the coordinate system have been favored by the proponents of these types of questions placed in the coordinate system of geometry, often in conjunction with the function, the geometry and algebra knowledge into one, Embodies the combination of number and form, and effectively examines the ability of students to comprehensively use knowledge.The author analyzes and studies such problems, and found that when solving such problems, they often use some basic knowledge points to master these knowledge and laws and problems That can be successfully resolved. Now these knowledge and methods, summarized as follows.