A. It's in May.
B. At 2:30.
C. Winter.
D. I can swim.
E. I go shopping.
-2的相反数是( )
如图,在△ABC中,∠C=90°.
(1)用尺规作图法作AB边上的垂直平分线DE,交AC于点D,交AB于点E.(保留作图痕迹,不要求写作法和证明);
(2)连结BD,若BD平分∠CBA,求∠A的度数.