解题方法
1 . 如图,在
中,
是
内部一点,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/457ca98094e6d6082712d6f37930c340.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/ad092226-95ec-4836-ab84-bd63b56d9dee.png?resizew=126)
(1)求
的长;
(2)求证:
为等腰三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287bc880f8946d297284048d55c60b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/457ca98094e6d6082712d6f37930c340.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/ad092226-95ec-4836-ab84-bd63b56d9dee.png?resizew=126)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
您最近一年使用:0次
2021-11-01更新
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208次组卷
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2卷引用:陕西省榆林市定边县第四中学2024届高三上学期高考滚动检测(三)(期中)文科数学试题