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我们都知道,三角形的中线将三角形的面积二等分;平行于三角形一边的直线也有一条平分三角形的面积(该直线分一边得两线段的比为1
We all know that the middle of the triangle bisects the area of the triangle; the straight line that is parallel to one side of the triangle also has an area that bisects the triangle