中国荷斯坦牛的特点:Math!!!!!Math~~~~

来源:百度文库 编辑:神马品牌网 时间:2024/07/08 22:14:18
In the figure K is the vertex of square KLMN.
Side KL is parallel to either the x- or y- axis. In the area of KLMN is 16, each of the following could be the coordinates of L EXCEPT:
(A) (2,6)
(B) (6,2)
(C) (2,-2)
(D) (-2,2)
(E) (4,4)

由题目算出:这个正方形每边长为4
那么,每个坐标的x,y只可能相差0或4。
不难看出:选E.