如图,点
是
的内心,连接
并延长交
于点
,交
的外接圆于点
,连接
.以下结论中正确的结论有( )个
(1)
平分
;(2)
;(3)
;(4)
;(5)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e792b0ef3d542237ed0903194597651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/1b0bed38-8773-47a3-ae84-3e181940ab5a.png?resizew=147)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde37c9de71e51cc3bc2183e3660d060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391b4dd28e27c3a7af9bae7d60969a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba7585be926cbb0105e2bb7facb19df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e792b0ef3d542237ed0903194597651.png)
A.5 | B.4 | C.3 | D.2 |
更新时间:2023-12-11 17:15:42
|
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【推荐1】如图,点A,B,C均在
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A.2 | B.![]() | C.![]() | D.4 |
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【推荐2】如图,半径为
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![](https://img.xkw.com/dksih/QBM/2021/1/12/2634638792105984/2636128285130752/STEM/23ed5c4e-c5be-434b-ae18-3a25f89830cd.png?resizew=198)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c3ec174b1ce835cc8737ff6ce57e52.png)
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【推荐1】已知点I为△ABC的内心,若∠A=40°,则∠BIC=( )
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名校
【推荐2】如图所示,点
为
三个内角平分线的交点,
度,
,点
,
分别为
,
上的点,且
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甲:
度;
乙:四边形
的面积是不变的;
丙:当
时,
周长取得最小值.
其中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/afe533ae-1806-43d9-9ccd-9a0eebde580c.png?resizew=221)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e7d95578c9ba65c367d33948b6f4d2.png)
甲:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d245bb2c95926e7815f5483d736bcb7b.png)
乙:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6897c275957c00bb8237021a80843ad2.png)
丙:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d5e50b028ec26453dccf98fe3924cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f02028a3847c4807c2d3cf0ea7efb8.png)
其中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/afe533ae-1806-43d9-9ccd-9a0eebde580c.png?resizew=221)
A.只有丙正确 | B.只有甲、乙正确 | C.只有乙、丙正确 | D.甲、乙、丙都正确 |
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