如图,在平面直角坐标系中,梯形ABCD四个顶点的坐标为A(2,3√2),B(4,3√2),C(7,0).D(0,0)

2个回答

  • (1) S梯形=(AB+CD)·H/2

    =(2+7)×3√2/2

    =27√2/2

    (2) 将梯形ABCD向下平移3√2个单位长度后,写出此时梯形各个顶点的坐标如下:

    A(2,0) B(4,0) C(7,﹣3√2) D(0,﹣3√2)