39. 10 邊形的內角和為幾度?
(A)1,440°
(B)1,410°
(C)1,800°
(D)360°
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統計: A(3), B(0), C(0), D(0), E(0) #1894603
統計: A(3), B(0), C(0), D(0), E(0) #1894603