如图,在等边
中,点D、E分别在边BC、AC上,且
,
,
,则
的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/0b537898-e810-43d3-a445-873c410a595c.png?resizew=132)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f480c60b88b546cb15d3b5622e212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32908e5f79e798701f8b952cec1d3f33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cfa69db126a57bce9f4ee0b0b3b8717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060d4e6d559c47f48ba22b2bb9a75eb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f480c60b88b546cb15d3b5622e212.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/0b537898-e810-43d3-a445-873c410a595c.png?resizew=132)
A.3 | B.9 | C.![]() | D.![]() |
更新时间:2022-10-18 00:46:27
|
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【推荐1】如图,在四边形ABCD中,AC,BD为对角线,AB=BC=AC=BD,则∠ADC的大小为( )
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【推荐2】如果两个等边三角形的边长之比为
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【推荐1】如图,△ABC中,CB=CA,∠ACB=90°,点D在边BC上(与B、C不重合),以AD为边在AD右侧作正方形ADEF,过点F作FN⊥CA,交CA的延长线于点N,连接FB,交DE于点P,给出以下结论:①CN=FN+CD;②∠ADC=∠ABF;③四边形CBFN为矩形;④∠AFB+∠FAB=135°;⑤EF2=FP·BC,其中正确结论的个数是( )
![](https://img.xkw.com/dksih/QBM/2021/5/13/2720028244099072/2720082524905472/STEM/cacad7ac6f31401696608b70c8bb6ef1.png?resizew=184)
![](https://img.xkw.com/dksih/QBM/2021/5/13/2720028244099072/2720082524905472/STEM/cacad7ac6f31401696608b70c8bb6ef1.png?resizew=184)
A.2 | B.3 | C.4 | D.5 |
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名校
解题方法
【推荐2】如图,在正方形
中,E,F分别是
,
的中点,
交
于点H,
交
于点G,下列结论,①
;②
;③
;④
其中正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712392970739712/2716815963176960/STEM/b2a96c48a3374d8f80fd1e78bb76da60.png?resizew=135)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fecb12d9d43cb84d04782861dcd0ec36.png)
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A.①③④ | B.①② | C.②③ | D.①②④ |
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