問題詳情
11.坐標平面上，直線 12x＋5y＝60 交 x 軸於 A 點，交y 軸於 B 點。若 O 為原點，I 點為△AOB 的內心，則△AIB 的面積＝？
(A) 13
(B) 12
(C) 15
(D) 14
(A) 13
(B) 12
(C) 15
(D) 14
參考答案
無參考答案
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