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如何将正方形滤纸剪成圆形滤纸

更新时间: 2020-09-16 00:00:00     

将正方形滤纸剪成圆形滤纸的方法:

将正方形滤纸沿对角线折叠一次,然后将形成的等腰三角形的顶跟底边中点再对折,使用圆规,用最后形成的等腰三角形的顶点为原点,半径是所需要的滤纸的大小,在滤纸上画条线,最后用剪刀剪下来就可以了。

关键词: 如何 正方形 滤纸 圆形

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