单选题 适中0.65 引用1 组卷160
如图,AB是⊙O的直径,弦CD⊥AB,∠COB=60°,CO=2,则阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878939532378112/2882881195507712/STEM/cd1065bd-5ca4-4a11-ad6b-c5fbdcaa113d.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878939532378112/2882881195507712/STEM/cd1065bd-5ca4-4a11-ad6b-c5fbdcaa113d.png?resizew=189)
A. | B.π | C. | D.2π |
21-22九年级上·山西大同·阶段练习
类题推荐
如图,点P是等边三角形ABC外接圆⊙O上的点,在以下判断中,不正确的是
![](https://img.xkw.com/dksih/QBM/2013/7/24/1573671586824192/1573671592878080/STEM/46496b0fac8646fc905f95c9deb1e5c8.png?resizew=131)
![](https://img.xkw.com/dksih/QBM/2013/7/24/1573671586824192/1573671592878080/STEM/46496b0fac8646fc905f95c9deb1e5c8.png?resizew=131)
A.当弦PB最长时,ΔAPC是等腰三角形 | B.当ΔAPC是等腰三角形时,PO⊥AC |
C.当PO⊥AC时,∠ACP=30° | D.当∠ACP=30°时,ΔPBC是直角三角形 |
如图,⊙O的半径OC与弦AB交于点D,连结OA,AC,CB,BO,则下列条件中,无法判断四边形OACB为菱形的是( )
![](https://img.xkw.com/dksih/QBM/2018/4/18/1926934488563712/1927484486230016/STEM/4ee5e7ed461a4036a8e099d5a56ec915.png?resizew=106)
![](https://img.xkw.com/dksih/QBM/2018/4/18/1926934488563712/1927484486230016/STEM/4ee5e7ed461a4036a8e099d5a56ec915.png?resizew=106)
A.∠DAC=∠DBC=30° | B.OA∥BC,OB∥AC | C.AB与OC互相垂直 | D.AB与OC互相平分 |
组卷网是一个信息分享及获取的平台,不能确保所有知识产权权属清晰,如您发现相关试题侵犯您的合法权益,请联系组卷网