如图,点A、B、C都在⊙O上,且点C在弦AB所对的优弧上,若∠ABO=50°,则∠ACB的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/c8f06718-b117-468c-8d7c-48b560d9866f.png?resizew=106)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/c8f06718-b117-468c-8d7c-48b560d9866f.png?resizew=106)
A.20° | B.40° | C.30° | D.50° |
更新时间:2021-11-21 22:08:22
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【推荐1】如图,直线AB∥CD,点G在直线CD上,以点G为圆心,适当长为半径画弧,交AB于点E,F,连接EG,FG.若∠1=50°,则∠2的度数为( )
![](https://img.xkw.com/dksih/QBM/2022/5/26/2987806576640000/2992661426421760/STEM/4c6bcf01-e209-4c81-ae15-54deed0b32c1.png?resizew=193)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,⊙O 是
的外接圆,若
,则角
的大小为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/ad8fd595-640b-4e43-a51e-52797717332b.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d777d15cd733338ecfd0ea63819f62c.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/ad8fd595-640b-4e43-a51e-52797717332b.png?resizew=146)
A.40° | B.45° | C.50° | D.60° |
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【推荐1】如图,
是
的直径,
,点
在直径
上方的
上,连接
,
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/9/304a7d8c-a2eb-4cd2-95c5-6f19939c9eff.png?resizew=160)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,
是
的弦,
是
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A.![]() | B.![]() | C.![]() | D.![]() |
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