問題詳情
19. 圖 ( 九 ) 為一張三角形 ABC 紙片，P 點在 
上。今將 A 摺至 P 時，出現摺線 
，其中 D 點在 
上，如圖 ( 十 ) 所示。若△ ABC 的面積為 80，△ DBC 的面積為 50，則 
與 
的長度比為何？
(A) 3：2
(B) 5：3
(C) 8：5
(D) 13：8
參考答案
無參考答案
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