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並前往 https://zh.khanacademy.org/math/zh-grade-8/x53b43a0f3967e50d:zhou-dui-chen/x53b43a0f3967e50d:chui-zhi-ping-fen-xian/v/constructing-a-perpendicular-line-using-a-compass-and-straightedge
是否確定要離開?
確定! 回上一頁