問題詳情
如圖所示﹐△ABC為一直角三角形且∠ A= 90°﹐四邊形BDEC是以
為一邊向外作出的正方形﹒已知
﹐求
的長度為
(C) 。



(C) 。

參考答案
答案:A
難度:適中0.653696
統計:A(168),B(36),C(1),D(19),E(0)
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