問題詳情
15.若一三角形的三內角度數比為1：2：3，則以此三角形之三邊長為邊，向外各作一個正三角形，則其面積之比為多少？
(A) 1：2：
(B) 1：4：
(C) 1： 
：
(D) 1：3：4
參考答案
無參考答案
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