本人日前拜读了《中小学数学》(初中版)2014年第7—8期邱小航写的《图形平移规律在平行四边形存在性问题中的应用》一文,受益匪浅,但在解题过程中要考虑多种平移情况,还需要画图分析,也很复杂,学生难以掌握.本人通过探究,发现还有更简洁的方法,供大家参考.预备知识1:若在平面直角坐标系中,A(x_1,0),B I recently read the “primary and secondary mathematics” (junior high school version) 2014 No. 7-8 Qiu Xiaofe wrote “the problem of parallelogram translation of the law of the application of graphics” article, benefit a lot, but in the process of problem solving Consider a variety of translation, but also need to draw analysis, but also very complex, difficult for students to master .I through exploration and found that there are more concise methods for your reference.Preparative Knowledge 1: If the plane Cartesian coordinate system, A (x_1 , 0), B.