如图,已知∠POQ=30°,点A、B在射线OQ上(点A在点O、B之间),半径长为2的⊙A与直线OP相切,半径长为5的⊙B与⊙A内含,那么OB的取值范围是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/caf15f09-82ad-4871-ae2b-e90d76776011.png?resizew=213)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/caf15f09-82ad-4871-ae2b-e90d76776011.png?resizew=213)
A.4OB7 | B.5OB7 | C.4OB9 | D.2OB7 |
21-22九年级下·上海普陀·期中 查看更多[5]
上海普陀区梅陇中学2021-2022学年九年级数学下学期期中线上测试试题(已下线)考点二点与圆、直线与圆的位置关系(已下线)第二十七章 圆与正多边形(A卷·知识通关练)-【单元测试】2022-2023学年九年级数学下册分层训练AB卷(沪教版上海)(已下线)27.5圆与圆的位置关系(分层练习)-2022-2023学年九年级数学下册同步精品课堂(沪教版)(已下线)九年级数学开学摸底考01(上海专用)-2023-2024学年初中下学期开学摸底考试卷
更新时间:2022-09-26 10:27:27
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【推荐1】如图,在
中,
,
,以点
为圆心,以
的长为半径作弧交
于点
,连接
,再分别以点
,
为圆心,大于
的长为半径作弧,两弧交于点
,作射线
交
于点
,连接
,则下列结论①
②
垂直平分线段
③
④
中不正确的有( )
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A.![]() | B.![]() | C.![]() | D.![]() |
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名校
【推荐2】如图,直线
,直线
分别与
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交
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【推荐1】如图,已知点A,B,C在
上,
,
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【推荐2】如图,在菱形ABCD中,对角线AC、BD交于点O,以OB为直径画圆M,过D作⊙M的切线,切点为N,分别交AC、BC于点E、F,已知AE=5,CE=3,则菱形ABCD的面积是( )
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【推荐1】已知圆
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【推荐2】直径分别为8和6的两圆相切,则这两圆的圆心距等于( )
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