△ABC中,∠BAC=45°,D为AB上一点,BD=10
,连接CD,将△CBD沿CD翻折至△CDF,点B的对应点F点恰好落在边AC上.延长CA至点E,连接DE,若AE=2,tan∠BCD=
,则DE长为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
更新时间:2022-02-25 21:48:28
|
相似题推荐
填空题
|
较难
(0.4)
【推荐1】如图,射线AB与射线CD平行,点F为射线AB上的一定点,连接CF,点P是射线CD上的一个动点(不包括端点C),将
沿PF折叠,使点C落在点E处.若
,当点E到点A的距离最大时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc005e70ca18286ac605e339d2a0e90f.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d4c08ed526b54460c4d6fda1c11b10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e9867fe832d3996de92e6c9843a4141.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc005e70ca18286ac605e339d2a0e90f.png)
![](https://img.xkw.com/dksih/QBM/2022/4/25/2965953410613248/2970796464406528/STEM/343b6c78-8fdc-49cb-a02b-37711a3ba868.png?resizew=233)
您最近一年使用:0次
填空题
|
较难
(0.4)
【推荐2】如图是一张直角三角形纸片
,其中
.请按下列步骤操作:①沿
的垂直平分线/折叠,折痕与
交于点D:②沿过点C的直线l,折叠,使点A落到
上的点E处,若
,则
的度数为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0487ebca22d4aa1233073f81fd70a424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/24/fcf0624a-5318-4395-a5a4-22496c2ea937.png?resizew=243)
您最近一年使用:0次
填空题
|
较难
(0.4)
【推荐1】如图,将正方形
沿着
,
将
,
翻折,使
,
两点恰好落在点
,过点
作
,交
于点
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dad80b1b74645b9b6fe9ea59ba5bdf.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1dc52a8ba9f389800eb92dbd145bf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70ab9b44faf931cceaf555b07eccabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dad80b1b74645b9b6fe9ea59ba5bdf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/28/28a91009-6d4d-4389-83c1-ece68e99944d.png?resizew=152)
您最近一年使用:0次
填空题
|
较难
(0.4)
名校
【推荐2】已知P是中心为O的正方形ABCD内一点,AP⊥BP,OP=
,PA=6,则正方形ABCD的边长是_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e051d14fd6a787387995331f5e6d026.png)
您最近一年使用:0次
填空题
|
较难
(0.4)
【推荐1】如图,在矩形
中,
是
的中点,过点E作
的垂线交
于点
,对角线
分别交
,
于点
,
,当
时,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a10809d172017faa4b3bf06c8a61a5c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4536afbc48f0171e85382513dd6877be.png)
您最近一年使用:0次
填空题
|
较难
(0.4)
【推荐2】如图,已知一次函数
的图象与反比例函数
图象交于
,
两点.若
轴,且
,则
面积的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f918f3126b7fe52e2ffcd2917b8c994d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85410ff00c81839ff9a64bf86dc36f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69bf093299f0a975d68dc684fb67a393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/8/1064c5b9-f6b1-4f70-83f5-088b19b96c4f.png?resizew=177)
您最近一年使用:0次