如图,将△ABC沿角平分线BD所在直线翻折,顶点A恰好落在边BC的中点E处,AE=BD,那么tan∠ABD=( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/23/00af41c6-797d-4c2f-8fb5-d116331e99ce.png?resizew=223)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/23/00af41c6-797d-4c2f-8fb5-d116331e99ce.png?resizew=223)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2018-10-23 14:07:22
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【推荐1】如图,在平行四边形
中,
,M是边
的中点,N是边
上的动点,将
沿
所在的直线翻折得到
,连接
.对于结论I、Ⅱ,下列判断正确的是( )
结论I:当
时,四边形
是菱形;
结论Ⅱ:当点
在线段
上时,
的长度为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d48472b00ec6632c1f236045143060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d85ae379f8be9a204cff7c80d10ccdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7f58eeb3fb122d2b8ebe6b2b44acdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c41e4915ba9901eea70770edf03b9d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/8097c5e9-c842-4607-89d8-451a8c3e2a0f.png?resizew=200)
结论I:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c95bc9cbaa7a9b4bb539b0ff33ed932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c637e8c81ec43e548a129727d9a8a2f8.png)
结论Ⅱ:当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8396a7120abeaae6236a9292e5b9f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c41e4915ba9901eea70770edf03b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d48472b00ec6632c1f236045143060.png)
A.I对Ⅱ不对 | B.I不对Ⅱ对 | C.I、Ⅱ都不对 | D.I、Ⅱ都对 |
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【推荐2】如图,把一个边长为5的菱形
沿着直线
折叠,使点
与
延长线上的点
重合.
交
于点
,交
延长线于点
.
交
于点
于点
,则下列结论:①
,②
,③
,④
.正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/557c1aec-9062-4b42-b7a6-51385e41b061.png?resizew=261)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b88529f7992de8e4420645438832542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfbf8698d79ede6aa41b85914d912138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2357cbe112509627a7b89a267b977ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f532e72b80c6f1389130066e323058e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc842bca2322fc35589758582e752f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5198f1c362641dd018c29ee5953e54e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/557c1aec-9062-4b42-b7a6-51385e41b061.png?resizew=261)
A.①②③ | B.②④ | C.①③④ | D.①②③④ |
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名校
【推荐1】如图,矩形
中,
,E为
的中点,将
沿
翻折得到
,延长
交
于G,
,垂足为H,连接
、
.以下结论:①
; ②
; ③
;④
,其中正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/37045aa2-b281-4b6a-9042-4f400846ab81.png?resizew=191)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f804c8b3a2f84ebcbc92b319d4e08c0a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
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A.1 | B.2 | C.3 | D.4 |
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【推荐2】在
中,
,
,点D和点E分别是线段
上的动点,且
,在运动过程中,
可取的最大整数值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
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A.1 | B.2 | C.3 | D.4 |
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