![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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更新时间:2020-01-28 19:10:18
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【推荐1】⊙O的半径为1,AB、AC是⊙O的两条弦,AB=
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,则∠CAB所对圆周角的度数为_______ .
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【推荐2】在半径为5cm圆内有两条互相平行的弦,一条弦长为8cm,另一条弦长为6cm,则这两条弦之间的距离为_____ .
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【推荐1】如图,
是
的直径,弦
连接
并延长交
于点
连接
交
于点
若
则
的度数是________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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【推荐2】如图所示的网格是正方形网格,
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【推荐1】如图,
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【推荐2】已知扇形的面积是
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc269d8584a52a6bbc59163a859ea40.png)
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