如图,四边形ABCD是⊙O的内接四边形,⊙O的半径为2,∠D=110°,则
的长为__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
更新时间:2022-01-16 07:43:16
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【推荐2】如图,
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【推荐1】如图,正六边形
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【推荐1】如图,在扇形OAB中,∠AOB=100°,半径OA=6,将扇形OAB沿过点A的直线折叠,点O恰好落在弧AB上的点D处,折痕交OB于点C,则弧BD的长为_____ .
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