問題詳情
18.如下圖(十五)，梯形ABCD中， 
， 
，其中 
。小書自B點剪出 
，使得 
將梯形分成兩塊面積相等的圖形。若N在 
上，則 
＝﹖
(A)
(B)
(C)
(D)
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增
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