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37022681發表於 2016-1-28 18:35 | 顯示全部帖子
A student said, "There are most 3 obtose angles in the exterior angles of a polygon" Do you agree with him?
求原文翻譯+列式~O(∩_∩)O謝謝
我叫獨行霞，小名小霞XD
愛看少女漫畫的懶癌晚期

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