如图,在
中,点
在边
上,点
在边
上,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f6ca059f95d35b9b86026e03db275d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/18/4daa58e3-a961-4b99-a6eb-84485678794b.png?resizew=126)
(1)求证:
;
(2)若
,求
的长度
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f6ca059f95d35b9b86026e03db275d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/18/4daa58e3-a961-4b99-a6eb-84485678794b.png?resizew=126)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b238bd5ee6bbcea3c228122c9e356b5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84255d376805ea6176dc249c88e4e7ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
更新时间:2024-03-19 16:54:11
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【推荐2】如图,在
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名校
【推荐1】如图,
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中点,连接
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e60fbe6820130fb20abc555a94b5ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9966839944bf4087bd18fede1d2d2c42.png)
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【推荐2】如图,已知在
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![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/16/60122e0e-9ab3-4772-b7aa-a7de9ed9d3bf.png?resizew=161)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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