重庆荣昌折扇是中国四大名扇之一,其精雅宜士人,其华灿宜艳女,深受各阶层人民喜爱.古人曾有诗赞曰:“开合清风纸半张,随机舒卷岂寻常;金环并束龙腰细,玉栅齐编凤翅长”.荣昌折扇平面图为下图的扇形
,其中
,动点
在
上(含端点),连接
交扇形
的弧
于点
,且
,则下列说法正确的是_________ .
①若
,则
②若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00510003734c0327cd675683861f251b.png)
③
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf126cfed85fa9b7720ec6f7b0008dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e0290d06fd170b883090a95cadc7ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bb3820bab977db734f4335e4fde720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b4f6e4185297e39eff72d2d986f02f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/1/1d89adfa-5177-4b10-b077-fb06d4be6a07.png?resizew=195)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c54c86523c688582bbdb52ada6a7fa72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00510003734c0327cd675683861f251b.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec980d43b1dbf2a7e6bc7fcba9fbd78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe15ae38508509281301131e20e4707.png)
更新时间:2023-09-01 14:51:18
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