如图,在
中,
,
于
点,在
中,
,
于
点.
和
的延长线交于点
,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/6c97b2dd-b3d4-40a9-a858-c94fc161d741.png?resizew=204)
(1)求证:
;
(2)若
,试判断
的形状,并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab41054fa9ce51b68e78d9c0cf398d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b5536e2d24bffb076daf7f5ffe8eb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01f6f70b5cb3fd3b580e9f298588d6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f3d2da8339463d2154ba982af948534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91303b2b7d81e5f7f4d167d2be520da1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935ad59079c158ea0f92018fc548e4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6cd332590b9eb4032b51a39134d219.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/6c97b2dd-b3d4-40a9-a858-c94fc161d741.png?resizew=204)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03046667fedf78c4b29e1ca9825fac84.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/693407f51dbfc9fec502b75555a6323a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b5c3280f0f89abfaf6a96b7650bd5bd.png)
更新时间:2024-02-12 20:55:34
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