如图,
分别与
相切于A,B两点,C是优弧
上的一个动点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41db498f025052df2dbb1e50ab672675.png)
______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e58e5a299e7b6b508c61244b93ae1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e40a035919d280c87444dc711d860eb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41db498f025052df2dbb1e50ab672675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
更新时间:2024-01-19 18:30:35
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【推荐1】如图,
和
是一副含有
、
角相互重叠的三角板,且直角顶点重合,若两直角重叠形成的角为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcfbc2a377c4d6c0423744c3b63409b6.png)
__________
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【推荐2】在多边形中若各个内角度数之比是连续正整数,那么这个多边形我们称之为“特质多边形”,例如度数之比为1∶2∶3的三角形就叫做“特质三角形”,1、2、3就是这个三角形的“特质数”.如果一个“特质三角形”有个内角的度数是50〫,那么这个三角形的“特质数”是 ________________ .
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【推荐1】如图,在矩形
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
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【推荐1】如图,
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【推荐2】如图AB、AC是⊙O的两条弦,∠A=32°,过点C的切线与OB的延长线交于点D,则∠D的度数为_____ .
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