如图,四边形ABCD为正方形,边长为4,以B为圆心、BC长为半径画
,E为四边形内部一点,且BE⊥CE,∠BCE=30°,连接AE,求阴影部分面积( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
2022·山东德州·二模 查看更多[6]
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更新时间:2022-05-28 19:24:54
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【推荐1】如图,在
中,
,
,点
是
的中点,分别以点
、
、
为圆心,
的长为半径画弧,交线段
、
于点
、
、
、
,若点
、
是线段
的三等分点时,图中阴影部分的面积为( )
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【推荐2】如图所示,以六边形的每个顶点为圆心,1为半径画圆,则图中阴影部分的面积为( )
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单选题
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【推荐1】如图,正方形
的边长为
,把
分别绕点
按顺时针方向旋转
得到
,
的延长线交
于点
,现有下列结论:①四边形
为菱形;②四边形
的面积为正方形
面积的一半;③
.其中正确的结论有( )
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