在矩形ABCD中,A是(3、2)和B是(1,6)
(1)求了BC的方程
(2)AC的方程是y = x - 1,求C的坐标
(3)求矩形ABCD周长
解(1)y=(1/2)x+11/2
(2) (13,12)
(3) 16(根号5)
(原题中the quation of BC应为the equation of BC,the equation of ACis y=x-1应为
the equation of AC is y=x-1,the perimeterof the rectangle ABCD应为
the perimeter of the rectangle ABCD)