请帮我翻译一下..?

来源：百度知道 编辑：UC知道 时间：2024/05/24 15:52:12
a manufacturer wanted to put out a line of cutting boards in the shape of a parallelogram. his designer sent him a sketch of a board plotted on the coordinate plane. the vertices of the board had coordinates (1, -1) , (2,1), (4,2) and (3,0). show that this board is a parallelogram. (show that the opposite sides are parallel)

制造商想在切板上画个平行四边形。设计师给他送去一张样板，上面标注了坐标值。四边形的4个顶点坐标分别是(1, -1) , (2,1), (4,2) 和 (3,0)，表示该四边形为平行四边形（对边平行）。