問題詳情
10.如右圖(四)，O 為△ABC 的外心，△OCP 為正三角形， 
相交於 D 點，連接
。
若∠BAC＝80°， 
，則∠ADP 的度數為何？
(A) 80°
(B) 85°
(C) 90°
(D) 95° A
參考答案
答案：A
難度：計算中-1
書單：沒有書單，新增
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