如图,菱形ABCD的边长为2,∠BAD=60°,点E是AD边上一动点(不与A,D重合),点F是CD边上一动点,DE+DF=2,则∠EBF=______ °,
面积的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/16/50acc043-3f20-4f9f-8be9-ab888ccbef00.png?resizew=174)
21-22八年级下·北京东城·期末 查看更多[3]
北京市东城区2021-2022学年八年级下学期期末数学试题北京市西城区第十四中学2022~2023学年八年级下学期期中考试数学试题(已下线)专题01 菱形的性质与判定(四大类型)(题型专练)-2023-2024学年九年级数学上册《知识解读·题型专练》(北师大版)
更新时间:2022-07-16 20:43:26
|
相似题推荐
填空题
|
适中
(0.65)
名校
【推荐1】如图,直角三角形
中,
,
,
,
是
的平分线,点P是线段
上的动点,求
的最小值________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e240a6378adf6d23ebf9cc710c9bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b02cf8bdc3f3ad1e9fc651c2b1e8fa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/10/c49eade5-7a1d-440b-83f7-d31e18c1dd88.png?resizew=164)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】如图, Rt△ABC中,
,点D是AC的中点,E边BC上一点,且CB=4,以DE为边,在DE的右侧构造等边三角形DEF,连结AF,则AF长度的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa1247fcebc2f5e5ec9924b7e22dda4.png)
![](https://img.xkw.com/dksih/QBM/2022/9/29/3077120401063936/3085847402618880/STEM/0359f597b2d54e53a319d3d4dd2bd3bf.png?resizew=176)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐1】如图,在等腰Rt△ABC中,∠C=90°,AC=8,F是AB边上的中点,点D、E分别在AC、BC边上运动,且保持AD=CE,连接DE、DF、EF.在此运动变化的过程中,下列结论:①△DFE是等腰直角三角形;②四边形CDFE的面积保持不变;③DE长度的最小值为4;④四边形CDFE不可能为正方形.其中正确的结论是______ (把你认为正确的序号都填上).
![](https://img.xkw.com/dksih/QBM/2022/1/7/2896398352891904/2959189070815232/STEM/7edb32e3-4d50-4e45-b55f-3cb923db158e.png?resizew=353)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】在
中,
,
,点D为
的中点,M,N分别在
,
上,且
现有以下三个结论:①
;②
;③四边形
的面积为4;其中正确的结论有________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08313da7b66283d2e0b3987f3e6761f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdc9f4a99b567a6ee4be3943beeddca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ddb4bc59566f41e3c79a04e9c8cafb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3f5e1757c630aa02ef4202b191e907c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5627dee61ff1a179ed56a7e627927448.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/544ae245-8d75-44e6-adc8-1095c450cb28.png?resizew=127)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐1】如图,
的对角线
,
相交于点O,
平分
,交
于点E,连接
,且
,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1d3328b14c14879619e3ad894f7fe0.png)
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c679a0c575cb09ed975d6495affb200e.png)
________ .(用含m的代数式来表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a58a622e2b1a239f2f96aa1501e9799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1d3328b14c14879619e3ad894f7fe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de846e6854987fdbf4c2ad4d30e9dd11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c679a0c575cb09ed975d6495affb200e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/17/307961e9-88f2-4f10-8ebd-b90d87358f14.png?resizew=204)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】如图,在
中,
,
,
,
,点
是边
上一动点.连接
,将
沿
折叠,得到
,其中点
落在
处,
交
于点
,当
时,
长度是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d2eae98e1683fbb9533584450dd696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2cff569cf7be56ea1eb7faf34da2a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d6e77dc580aadb7247857c02eaeb524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/e8d9060d7c8359fefd0cfd0d2d75197c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/d98ea0e5-4c02-48df-bd5c-a876718ff81b.png?resizew=135)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐1】如图(1),点F从菱形ABCD的顶点A出发,沿A→D→B以1cm/s的速度匀速运动到点B,点F运动时,△FBC的面积y(cm2)随时间x(s)的变化关系图象如图(2),则a的值是______ .
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】如图,在边长为13的菱形ABCD中,对角线BD=24,点O是线段BD上的动点,OE⊥AB于E,OF⊥AD于F.则OE+OF=__________________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/678cd104-6684-4740-8a29-7a860c4fb329.png?resizew=163)
您最近一年使用:0次