如图,在
中,
,
为
的平分线,点
在
的内部,且
,
.求证:射线
平分
边.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb980da8e86b4cfd322616dc84fc6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f7f37289eeb9721a6f3cbfd0d7708a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca86e1cd1a864ef4721fbcc43148dd74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/8fc8386b-7128-4af4-84a2-25e838d12edc.png?resizew=215)
2018高三·全国·竞赛 查看更多[1]
更新时间:2018-12-16 16:34:51
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相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,
的内切圆
与边AB、BC切于D、E两点,DI与
的另一个交点为
与
交于点G,点H在线段
上,且
.证明:若A、H、E三点共线,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79516f18a7daf0ad467a48e16d0e65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79516f18a7daf0ad467a48e16d0e65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23270f1ce85a25d9276ae510bc9f5977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d31361bf0fadb5336b3f8786d673baff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/8ea0046a-5ba3-4343-96b3-e7d0f4d87bbe.png?resizew=210)
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解答题-问答题
|
适中
(0.65)
【推荐2】在△ABC中,M、N分别为边AB、AC上的点,且满足
.证明:线段MN经过△ABC的重心.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a376d59d4f089411199d3ae3f14969b3.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,菱形
的内切圆
与各边分别切于
,
,
,
,在
与
上分别作
的切线交
于
,交
于
,交
于
,交
于
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
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适中
(0.65)
【推荐2】如图,
、
为圆的两切线,
为圆的一条割线,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/8330969a-3658-4c62-809a-2ac00336a02a.png?resizew=134)
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