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问题详情

对任意角a,不能用尺规作图法作出的角度为（）

A、1/2a

B、3a

C、1/3a

D、2a

时间：2021-09-01 16:00 关键词：含弘慕课贵州遵义师院中学几何研究

答案解析

C

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