如图,菱形
中,
,点E、F分别在边
、
上,
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32436704a722d5e568ff5c175bf3c662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97075fe3c2a105f5d2d0a27a9f2b3410.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbf742249fc769ece02dd3ca60df6fc9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/30/36cc2664-c04a-4cdc-8c90-25e9d2d346eb.png?resizew=202)
A.![]() | B.![]() | C.![]() | D.![]() |
2023八年级下·江苏·竞赛 查看更多[3]
(已下线)江苏省泰州市姜堰区南苑学校2022-2023学年八年级下学期数学计算大赛5.23(已下线)第01讲 菱形的性质-【暑假自学课】2023年新九年级数学暑假精品课(北师大版)(已下线)专题1.2 菱形的性质与判定(分层练习)-2023-2024学年九年级数学上册基础知识专项突破讲与练(北师大版)
更新时间:2023-05-29 19:59:12
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】如图,已知正方形
的边长为4,以点A为圆心,1为半径作圆,E是
上的任意一点,将
绕点D按逆时针旋转
,得到
,连接
,则
的最小值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/740817d9-0a58-4254-889d-5768f2260ced.png?resizew=143)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/740817d9-0a58-4254-889d-5768f2260ced.png?resizew=143)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,在正方形
中,
,O是
的中点,
,连接
,将线段
逆时针旋转
得
,连接
,则线段
长的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b1107f50f4fc687e2cc5a11fb4486e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93af9774200946261f0ccba3e6eeba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a0387fc1258f31e44a10068c0ccfd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851ab1aa713a2d1c21e886c8acd3f0d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
A.8 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,边长为2的菱形ABCD绕点A旋转,当B、C两点恰好落在扇形AEF的EF上时,弧BC的长度等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/97d45e25-ad0f-4141-b545-8eeb037eec63.png?resizew=226)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/19/97d45e25-ad0f-4141-b545-8eeb037eec63.png?resizew=226)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】矩形ABCD中,相邻两边的长分别为4cm、
cm,则两条对角线夹角是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
A.90![]() | B.30![]() ![]() | C.45![]() ![]() | D.60![]() ![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,在菱形ABCD中,∠BAD=70°,AB的垂直平分线交对角线AC于点F,垂足为E,连接DF则∠CDF等于( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/c743d4bb-dcef-4fc5-8756-dc18773293c3.png?resizew=188)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/c743d4bb-dcef-4fc5-8756-dc18773293c3.png?resizew=188)
A.55° | B.65° | C.75° | D.85° |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,
的对角线
、
交于点
,
平分
交
于点
,且
,
,连接
.下列结论:
平分
;
②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd94821766b83c71224b8305a5545d9.png)
③
;
④
,
成立的个数有( )个
![](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/1dde8112e8eb968fd042418dd632759e.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a58a622e2b1a239f2f96aa1501e9799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/245c24bc367dadfa17a54f98b6552af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e37b078d02601f76f0f8320b410809f.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd94821766b83c71224b8305a5545d9.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84be64d28b1623e71ad989f37336b1f2.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96b47b35f67332a87fbc0468329dcc2c.png)
成立的个数有( )个
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】已知菱形的边长是8,一个内角是
,那么这个菱形的面积是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
A.64 | B.32 | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,菱形ABCD的对角线AC,BD相交于点O,过点A作AH⊥BC于点H,连接OH,若OB=4.5,S菱形ABCD=36,则OH的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/11/9f0e5399-5c9a-4c97-a5b8-a080a6e6acf1.png?resizew=125)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/11/9f0e5399-5c9a-4c97-a5b8-a080a6e6acf1.png?resizew=125)
A.3 | B.3.5 | C.4 | D.4.5 |
您最近一年使用:0次