如图,四边形
中,
平分
,
点
,
,下列结论:①
;②
;③
.其中正确的是( )
![](https://img.xkw.com/dksih/QBM/2020/4/7/2436542186921984/2437018455416832/STEM/ab1a28390b3242b7bb720a89886984e7.png?resizew=106)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ff58e0fc7269d3c2fd1b0f80b9cce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7305de9211785b826823153897b17517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a6e294fba536843c9604199bd7a9cca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65b3415704bd947f2184254af35b5d8c.png)
![](https://img.xkw.com/dksih/QBM/2020/4/7/2436542186921984/2437018455416832/STEM/ab1a28390b3242b7bb720a89886984e7.png?resizew=106)
A.①②③ | B.②③ | C.①② | D.①③ |
更新时间:2020-04-10 10:11:55
|
相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】数学课上,大家一起研究三角形中位线定理的证明.嘉嘉和淇淇各自尝试作了一种辅助线,如图1,2.其中辅助线作法能够用来证明三角形中位线定理的是( )
A.嘉嘉的不可以,淇淇的辅助线作法可以 | B.嘉嘉的辅助线作法可以,淇淇的不可以 |
C.嘉嘉和淇淇的辅助线作法都不可以 | D.嘉嘉和淇淇的辅助线作法都可以 |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】如图,
的斜边在
轴上,
,含
角的顶点与原点重合,直角顶点
在第二象限,将
绕点顺时针旋转
后得到
,则
点的对应点
的坐标是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7e6a60c6085bf37b6126be043042a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e732f47fc1bd5d8bf0fb317fb4d50b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7e6a60c6085bf37b6126be043042a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8f3a8b0608ec011ad95c522fd2ea4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b85b2bacc6ef870506003e3036626fe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/21/99563b77-bc23-4a97-9937-a97c12135887.png?resizew=133)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐1】如图,在
中,
,
,D为
的中点,
,垂足为E.过点B作
交
的延长线于点F,连接
;现有如下结论:
平分
;②
;③
;④
;⑤
.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/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe446a0456e9168028baee032d8d7d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d070b7a48f8f14185ef306bbc53ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4280be91682e5d8a0d0704190319bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e521605c1066839c8cf71f0941b36d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80aaee6216102923774c342177eb0268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7cdf9fa577ccd291e8a8c8988189641.png)
A.5个 | B.4个 | C.3个 | D.2个 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,在Rt△ABC中,∠B=90°,AB=8,BC=4,斜边AC的垂直平分线分别交AB、AC于点E、O,连接CE,则CE的长为( )
![](https://img.xkw.com/dksih/QBM/2013/5/5/1573648742842368/1573648748724224/STEM/a06bff83aafc4213bd6ac5ef95b5762b.png)
![](https://img.xkw.com/dksih/QBM/2013/5/5/1573648742842368/1573648748724224/STEM/a06bff83aafc4213bd6ac5ef95b5762b.png)
A.5 | B.6 | C.7 | D.4.5 |
您最近一年使用:0次