如图,点D为AC上一点,点O为边AB上一点,AD=DO.以O为圆心,OD长为半径作圆,交AC于另一点E,交AB于点F,G,连接EF.若∠BAC=22°,则∠EFG=( )
![](https://img.xkw.com/dksih/QBM/2019/4/15/2182815294922752/2183883646763008/STEM/ffb769454f8842e6aced425ac17fc5fa.png?resizew=208)
![](https://img.xkw.com/dksih/QBM/2019/4/15/2182815294922752/2183883646763008/STEM/ffb769454f8842e6aced425ac17fc5fa.png?resizew=208)
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更新时间:2019-04-19 15:27:08
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适中
(0.65)
【推荐1】如图,已知
平分
,
平分
交
于E,若
,请用含
的式子表示
,下列表示正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/29/d4765fb1-0af7-47c8-829d-05d1779e76f2.png?resizew=199)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beca75dd777e1d29d89ed7624887fbed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48ada1e360efadd2022d0ee066ec8d6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/29/d4765fb1-0af7-47c8-829d-05d1779e76f2.png?resizew=199)
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【推荐2】如图,把
绕点C顺时针旋转某个角度
得到
,
,
,则旋转角
度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/235f6fd1-d04e-4f8e-9d5e-e6f39ad148ba.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb72f32da3ae0ccc6ff7061e798af0a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/235f6fd1-d04e-4f8e-9d5e-e6f39ad148ba.png?resizew=162)
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【推荐1】如图,将
绕点A按逆时针方向旋转40°到
的位置,连接
,若
,则
的大小是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c021993da445858448d368df42554c8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ecac2dad4cffdd971fd23deacff3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267e07d4aa26bbb8ecf669b66b9fd643.png)
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A.70° | B.60° | C.50° | D.30° |
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【推荐2】如图,将
绕点
顺时针旋转得到
,并使
点的对应点
点落在直线
上,连接
,若
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐1】如图,PA,PB分别与⊙O相切于A,B两点,若∠C=65°,则∠P的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/06416486-9aca-48f6-b4f3-8ff2d997b933.png?resizew=170)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/06416486-9aca-48f6-b4f3-8ff2d997b933.png?resizew=170)
A.65° | B.130° | C.50° | D.100° |
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【推荐2】如图,E是
的直径
上一点,
,
,过点E作弦
,P是
上一动点,连接
,过点A作
,垂足为Q,则
的最小值为( )
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