如图,
,
,
于点E,点F在
上,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/f964cf7e-d4e9-4732-9cca-6ddbe9a8ec83.png?resizew=173)
(1)求证:点D在
平分线上;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212125c9527ce3c18db6ca7d05902d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47256452f509ebc7ff090ca5cfc88142.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/f964cf7e-d4e9-4732-9cca-6ddbe9a8ec83.png?resizew=173)
(1)求证:点D在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4b1fdfa6c28c7b4113ba306547aa4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb79c82e2ecee4cce178f5e9d79d39e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
更新时间:2021-11-14 19:31:55
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【推荐1】如图,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d8397018b0a01a1b4e9574604f9e76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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