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把几何图形放在直角坐标系中,使几何与代数知识巧妙地结合,这是近几年中考中常见的题目。解这类问题要充分利用线段与点的坐标的互化。
The geometry is placed in a rectangular coordinate system, so that the combination of geometry and algebra knowledge, this is a common topic in the examination in recent years. Solve this type of problem to make full use of the intersection of the line segment and point coordinates.