如图,在扇形
中,
,点C为
的中点,点D为
的中点,连接
,交
于点E,若
,则阴影部分的面积是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/28/09763f9a-a971-4673-a67b-5088e9fa110a.png?resizew=146)
更新时间:2023-05-24 20:33:15
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【推荐1】两块三角板 (
中,
,
中,
,
)按如图方式放置,下列结论正确的是______ (填写所有正确结论的序号).
;②
;③
;④
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真题
解题方法
【推荐2】如图,四边形ABCD是正方形,点E在边BC的延长线上,点F在边AB上,以点D为中心将
绕点D顺时针旋转
与
恰好完全重合,连接EF交DC于点P,连接AC交EF于点Q,连接BQ,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf757b473eb160e42173982184ac5b9.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
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【推荐1】如图,在矩形ABCD中,AB=4,BC=2,以A为圆心,AB的长为半径画弧,交DC于点E,交AD延长线于点F,则图中阴影部分的面积为_____ .
![](https://img.xkw.com/dksih/QBM/2018/4/7/1918941911719936/1920375290396672/STEM/6017b4a03ec742a58a72b1c23a6f462e.png?resizew=126)
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【推荐2】如图,在扇形AOB中,
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
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【推荐1】如图,在
中,
,
,
,点A在反比例函数
的图像上,且y轴平分
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
______ .
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【推荐2】如图,在正方形
中,E、F分别在
、
边上,且
,连接
、
相交于G点.则下列结论:①
;②
;③
;④当E为
中点时,连接
,则
,正确的结论是__________ .(填序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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