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怎样用圆规画角平分线

更新时间: 2020-10-05 00:00:00     

1、设顶点是O,用圆规取任意半径以顶点为圆心画一段圆弧交两条边于点A和B;

2、 用圆规取任意半径分别以顶点和刚才作出的点A为圆心,做两个圆弧交于点C;

3、之后圆规改变一下半径长度再分别以顶点和点A作出两段圆弧交于点D,连接CD并延长;

4、 作出OB的垂直平分线EF,方法与OA相同;

5、 EF所在直线与CD所在直线交于一点G;

6、 连接OG并延长,即为角平分线。

关键词: 怎样 圆规 画角 平分

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