如图,
是
的直径,
,
,则
的度数是______ °.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea0d1d36ccbf5c6e4513dae86c4228a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71fcb2944867656cebd297e12a928853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
更新时间:2023-11-24 11:05:30
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【推荐1】如图,已知点P是射线ON上一动点(即P可在射线ON上运动),∠AON=30°,当∠A=______________ 时,△AOP为等腰三角形.
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【推荐1】借助如图所示的“三等分角仪”能三等分某度数的角,这个“三等分角仪”由两根有槽的棒OA,OB组成,两根棒在О点相连并可绕О转动,C点固定,
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【推荐2】如图,在
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【推荐2】.如图,在半径不等的同心圆中,圆心角∠AOB所对的
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/240d929040e21e7991481149b73a79a1.png)
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