問題詳情
18.如下圖(十二)， ABCD 的兩條對角線交於 O 點， 
。若 
＝4，則△ABD 的面積為何？
(A) 6
(B) 12
(C) 24
(D) 48
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
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