如图,在
中,
,高
,正方形
一边在
上,点E,F分别在
上,
交
于点N,则
的长为( )
![](https://img.xkw.com/dksih/QBM/2022/11/9/3105943211237376/3173928696905728/STEM/527d98a8d9484cae81fca023c3ed4ee1.png?resizew=176)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b697b4b6230d62b428fce3c27571ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99154aec25bfa23baa5343bf0c21991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://img.xkw.com/dksih/QBM/2022/11/9/3105943211237376/3173928696905728/STEM/527d98a8d9484cae81fca023c3ed4ee1.png?resizew=176)
A.10 | B.15 | C.20 | D.30 |
更新时间:2023-03-09 00:32:42
|
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名校
【推荐1】如图,在
中,
,
,P为边
上一动点,作
于点D,
于点E,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65334978b0519b379910dfc4acf8344.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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真题
【推荐2】如图,在
中,
,
,将
绕点
旋转得到
,使点
的对应点
落在
上,在
上取点
,使
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![](https://img.xkw.com/dksih/QBM/2020/7/16/2506961102888960/2506995243745280/STEM/2612cdaf805f4f52aa91b0620f83014d.png?resizew=143)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
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【推荐1】如图,在
中,
,以
上一点O为圆心作
与
、
都相切,
与
的另一个交点为D,则线段
的长为( )
![](https://img.xkw.com/dksih/QBM/2021/5/10/2718143311921152/2718173230047232/STEM/55da1971-fbff-45c2-90dc-e7e9b511a6db.png)
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【推荐2】如图,在△ABC中,点D,E分别是边AC,AB的中点,BD与CE交于点O,连接DE.下列结论:①点O是△ABC的重心;②
; ③
=
;④
=
,其中正确的个数有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/bf7e97f4-5394-4a42-afa5-dcfa7220d1e4.png?resizew=128)
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