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如何过圆上一点作圆的切线

更新时间: 2020-09-24 00:00:00     

过圆上一点作圆的切线的方法如下:

1、首先找到需要作圆的切线的圆上一点,即切点;

2、确定切点后,连接圆心和该切点,即是该圆的半径;

3、过该切点作垂直于半径的直线,即是切线。此时的半径,即是第二步中连接圆心和该切点的半径。

关键词: 如何 一点 切线

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