問題詳情
16.如右圖，已知一個圓內接正五邊形，圓心為O點。再由此正五邊形的每條邊，向外做相同的正五邊形。如右圖所示，請問下列敘述正確的有幾個？甲：O為FGH的外心。乙：F為BCH的外心丙：G為HCD的外心丁：H為AFE的外心
(A) 1個
(B) 2個
(C) 3個
(D) 4個 。 
參考答案
無參考答案
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