問題詳情
1. 如圖，L//M，∠4＝70°，則∠1＋∠2＋∠3＝？ 
(A) 70°
(B) 110°
(C) 150°
(D)資料不足，無法求得。
(A) 70°
(B) 110°
(C) 150°
(D)資料不足，無法求得。
參考答案
無參考答案
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