39.如下圖,若∠E=30°,則∠A+∠B+∠C+∠D=?
(A)180°
(B)210°
(C)240°
(D)270°
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統計: A(6), B(18), C(3), D(2), E(0) #2716109
統計: A(6), B(18), C(3), D(2), E(0) #2716109