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平面直角坐标系中点的坐标特征是以后学习的重要基础知识,必须熟练掌握．现对平面直角坐标系中点的坐标特征进行归纳．
The coordinate characteristics of the center point of a plane rectangular coordinate system are important basic knowledge for future study and must be mastered. The coordinate characteristics of the midpoints of a plane rectangular coordinate system are summarized.