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怎样用量角器画一个200度的角

更新时间: 2020-07-06 00:00:00     

先画一条射线,注意量角器的中心点要和角的顶点重合,零刻度线与射线重合,根据角的度数找准点,再画一条射线。先画直线取直线中点用量角器画20度的角,加起来就200度。

关键词: 怎样 量角器 一个

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