在
内部存在一点O,满足
,在
外有一点D到三边所在直线的距离相等,若设
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b5c0e0724cce5c25a88dca5e9220c2.png)
___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242b14a89363fa1e1a3b74ed989a5311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbec8352ce3dbfbf3b173045d0ba8f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b5c0e0724cce5c25a88dca5e9220c2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/e9fa449e-e40f-43e2-9e70-2e4a4bb55e2c.png?resizew=128)
更新时间:2024-03-26 13:41:03
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【推荐2】数学课上,同学们兴致勃勃地尝试着利用不同画图工具画一个角的平分线.小明用直尺画角平分线的方法如下:
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(3)作射线OD.射线OD是∠AOB的平分线.
请回答:小明的画图依据是____________________ .
(1)用直尺的一边贴在∠AOB 的OA边上,沿着直尺的另一条边画直线m;
(2)再用直尺的一边贴在∠AOB 的OB边上,沿着直尺的另一条边画直线n,直线m与直线n交于点D;
(3)作射线OD.射线OD是∠AOB的平分线.
请回答:小明的画图依据是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/bfbacd8d-a0e4-4ec7-a2d0-d586784eaeca.png?resizew=420)
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