1 . 如图,A、B、C、D是⊙O上的四点,BD为⊙O的直径,若四边形ABCO是平行四边形,则∠ADB的大小为( )
![](https://img.xkw.com/dksih/QBM/2018/8/31/2022279159521280/2024207501377536/STEM/ce6f3aeac2e5471d9c3e2f61d0f8d745.png?resizew=114)
![](https://img.xkw.com/dksih/QBM/2018/8/31/2022279159521280/2024207501377536/STEM/ce6f3aeac2e5471d9c3e2f61d0f8d745.png?resizew=114)
A.60° | B.45° | C.30° | D.25° |
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2018-09-19更新
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293次组卷
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5卷引用:【全国市级联考】吉林省长春市2018届九年级中考模拟试卷数学试题