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如图,在平面直角坐标系中,直线l为正比例函数y=x的图象,点A1的坐标为(1,0),过点A1作x轴的垂线交直线l于点D1,以A1D1为边作正方形A1B1C1D1;过点C1作直线l的垂线,垂足为A2,...
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