如图所示,BE、CF分别是锐角三角形△ABC的两条高,以AB为直径的圆与直线CF相交于点M、N,以AC为直径的圆与直线BE相交于点P、Q.证明:M、N、P、Q四点共圆.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/40cc047d-0d43-4ede-b499-1661d2553765.png?resizew=232)
2019高三·江西·竞赛 查看更多[1]
更新时间:2020-05-11 21:08:08
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【知识点】 纯几何方法
相似题推荐
解答题-问答题
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适中
(0.65)
【推荐1】如图,
分别为锐角
的边
上的高,
的中点为
,直线
与
的外接圆交于点
,线段
分别与
的外接圆交于点
(异于点
).证明:
四点共圆.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15204b24dd62067316fee9abab2bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/887721a843b2dc8e947cc42d09868e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c8fa99fc5d33d4be2217bed3367c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa900eda407ef2fca77602f6027001b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79ad0a37d9d864f1852a22ec4fb0347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d18a713e02974db6e97613cd0c8e7dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/251060a8-c1e0-44a7-a5c1-ecab733ad323.png?resizew=157)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,AD是锐角
的一条高,P是AD上一点,延长BP交AC于点M,延长CP交AB于点N,又MN与AP交于点Q,过Q作任一直线交PN于点E、交AM于点F.求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42b9eeac72dbf5edc1ec6a8722a0d781.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42b9eeac72dbf5edc1ec6a8722a0d781.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/f2bc5e9c-2973-4e71-af18-d0175a7a20e6.png?resizew=161)
您最近一年使用:0次