39.如下圖,若∠E=30°,則∠A+∠B+∠C+∠D=?
(A)180°
(B)210°
(C)240°
(D)270°
答案:登入後查看
統計: A(4), B(11), C(2), D(2), E(0) #2716109
統計: A(4), B(11), C(2), D(2), E(0) #2716109