如图,
内接于
,点
在弧
上,连接
,
,若
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9672cc271c7f79973c34a1e179782762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df44656a8c8e03c7c3452e30455fc219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721c75fcd58d3d54260aad0f82e09e37.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-05-19 13:01:55
|
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【推荐1】如图,折线
是一条灌溉水渠,水渠从A村沿北偏东
方向到B村,从B村沿北偏西
方向到C村,若从C村修建的水渠
与
方向一致,则
的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6e4b232691562dc6ec2cd397f58809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225803a7818b0985a1b96d8e0a627251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1845ed03ec08feac9adee161aab3449.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/f3702b5620dbee356a8e560c78d223ad.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,已知直线AB、CD被直线AC所截,
//
,E是平面内任意一点(点E不在直线AB、CD、AC上),设
,
.下列各式:①
,②
,③
,④
,
的度数可能是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/9f5b8198-957f-447d-b805-9d4daba2ce2f.png?resizew=227)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a447d8fc6919edd758ccec4277435aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80bb35aee114b8467fdc10a2cab02ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc4c63a548b91061528aa11058de75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd927b4b5a7875528c1b54aa4bb8b2dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/628560d39eeb0339fa00c9c15ab2c095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ee160ee215940127759598bc923e625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4598486f8c5ac28b1165b76e78105979.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/18/9f5b8198-957f-447d-b805-9d4daba2ce2f.png?resizew=227)
A.①②③ | B.①②④ | C.②③④ | D.①②③④ |
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【推荐1】如图所示,在四边形
中,点
是对角线
的中点,点
、
分别是
、
的中点,
,
,则
的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d2530e7023b2345c651e8f53629ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ded93b8a5c36c569133c1284ae04dfeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf0f03734e0d7e4de1d02f2e99b5124.png)
A.15° | B.20° | C.25° | D.30° |
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【推荐2】如图,AB∥CD,点E在BC上,且CD=CE,∠D=68°,则∠B的度数为( )
![](https://img.xkw.com/dksih/QBM/2017/4/27/1674769543692288/1737260660604928/STEM/49781f0116f1402997ec698af1e8d244.png?resizew=79)
![](https://img.xkw.com/dksih/QBM/2017/4/27/1674769543692288/1737260660604928/STEM/49781f0116f1402997ec698af1e8d244.png?resizew=79)
A.22° | B.32° | C.44° | D.68° |
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【推荐1】如图,⊙O是
的外接圆,BC=2,∠BAC=30°,则劣弧
的长等于( )
![](https://img.xkw.com/dksih/QBM/2020/7/23/2512231807639552/2512827707236352/STEM/39f042f9-73c6-42cc-a551-96336194b93a.png?resizew=141)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://img.xkw.com/dksih/QBM/2020/7/23/2512231807639552/2512827707236352/STEM/39f042f9-73c6-42cc-a551-96336194b93a.png?resizew=141)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,已知⊙P与坐标轴交于点A,B,O三点,点C在圆上,且∠ACO=60°.若点B坐标为(0,3),则弧OA长为( )
![](https://img.xkw.com/dksih/QBM/2021/12/15/2873130052911104/2874240878108672/STEM/068f3c69-4a03-42f0-94aa-0c399ea1db02.png?resizew=258)
![](https://img.xkw.com/dksih/QBM/2021/12/15/2873130052911104/2874240878108672/STEM/068f3c69-4a03-42f0-94aa-0c399ea1db02.png?resizew=258)
A.2π | B.3π | C.4π | D.2![]() |
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