单选题 较易0.85 引用4 组卷455
如图,⊙O是Rt△ABC的外接圆,∠ACB=90°,过点C作⊙O的切线,交AB的延长线于点D.设∠A=α,∠D=β,则( )
![](https://img.xkw.com/dksih/QBM/2021/6/13/2741849748307968/2743009291550720/STEM/9c8c8bc3579546d9a0f3dc686661f761.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/2021/6/13/2741849748307968/2743009291550720/STEM/9c8c8bc3579546d9a0f3dc686661f761.png?resizew=158)
A.α﹣β | B.α+β=90° | C.2α+β=90° | D.α+2β=90° |
2021·浙江杭州·二模
类题推荐
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