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[几何] 求正方形,四条边经过已知点

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hbghlyj posted 2022-1-9 00:34 |Read mode
在平面直角坐标系中,若正方形的四条边所在的直线分别经过点A(1,0),B(2,0),C(4,0),D(8,0),则这个正方形的面积的所有可能值为

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kuing posted 2022-1-9 14:03
三类:
AB、CD:
捕获.PNG
AC、BD:
捕获2.PNG
AD、BC:
捕获3.PNG

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