問題詳情
34. 如圖(十六)，有兩全等的正三角形 ABC、DEF，且D、A 分別為 △ABC、△DEF 的重心。固定D 點，將 △DEF 逆時針旋轉，使得A 落在 
上，如圖(十七)所示。求圖(十六)與圖(十七)中，兩個三角形重疊區域的面積比為何？
(A) 2 : 1
(B) 3 : 2
(C) 4 : 3
(D) 5 : 4
參考答案
無參考答案
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