瑞士数学家欧拉在《三角形的几何学》一书中提出:任意三角形的外心、重心、垂心在同一条直线上.这条直线被称为欧拉线.已知
的顶点
,若直线
与
的欧拉线平行,则实数
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa821ce30d45cfe0beeefd71ea3865e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f88d8065baae8403477e285240da2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2023-10-14 14:47:06
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【推荐1】在平面直角坐标系中,直线
经过
两点,
经过
两点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ ;若
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【推荐2】已知直线
与
平行,则
与
之间的距离为_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a1d38c80376cd376df6b9b6c010ce67.png)
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【推荐2】已知直线
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