如图,在
中,
,
,
平分
交
于点D,
交
的延长线于点E.则下列结论:①
;②
;③若
,则
;④
;⑤
.其中正确的结论有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fca3734de79f7f50b552ef62b29dc7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2bc29145f6e7557711c34b443bd5e84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c51c25b65a37b676ae3c3b71c29f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875047360434910992c07f81aa80d59c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f654fde982fac75cc3f7a24a082c7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc896d35495237fd65576e9b6f88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac476cdaa48b9989eba05165913437b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95cc0fc4427aa53cd0fa7850c55ae28d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d4d4459124411ae2ed4d4b7f91870f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/6/e9386592-9a3f-4696-a1f3-2c074899b6e2.png?resizew=176)
A.2个 | B.3个 | C.4个 | D.5个 |
更新时间:2023-09-30 19:13:56
|
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【推荐1】已知点
在线段
上,分别以
、
为边作等边三角形
和等边三角形
,
、
相交于点
,连接
与
相交于点
,连接
与
相交于点
,连接
、
,则①
;②
;③
;④
是等边三角形;⑤
平分
;⑥
;以上结论正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/12/1250d716-e51e-478d-aa30-6a806bb78e90.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422210c777ac0d625bbd81cc7601bf9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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A.3个 | B.4个 | C.5个 | D.6个 |
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【推荐2】如图,在平行四边形ABCD中,分别以AB、AD为边向外作等边△ABE、△ADF,延长CB交AE于点G,点G在点A、E之间,连接CE、CF、EF,则以下四个结论:①△CDF≌△EBC;②∠CDF=∠EAF;③△ECF是等边三角形;④CG⊥AE.一定正确的有( )个
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【推荐1】已知:如图,∠GBC,∠BAC的平分线相交于点F,BE⊥CF于H,若∠AFB=40°,∠BCF的度数为( )
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【推荐2】如图,直角梯形ABCD中AD∥BC,∠D=90°.∠A的平分线交DC于E,EF⊥AB于F.已知AD=3.5cm,DC=4cm,BC=6.5cm.那么四边形BCEF的周长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/d1929381-16b0-4ee0-9b78-9e8bb6595b43.png?resizew=110)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/d1929381-16b0-4ee0-9b78-9e8bb6595b43.png?resizew=110)
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【推荐1】如图,在△ABC中,∠BAC=45°,CD⊥AB于点D,AE⊥BC于点E,AE与CD交于点F,连接BF,DE,下列结论中:①AF=BC;②∠DEB=45°,③AE=CE+2BD,④若∠CAE=30°,则
,正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/dd75ed03-106f-4f63-a1a2-efccb2f99431.png?resizew=157)
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A.①②③ | B.①②④ | C.①③④ | D.①②③④ |
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【推荐2】如图,等腰直角
,
点P在
内,
,
,
则PB的长为( )
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A.![]() | B.![]() | C.5![]() | D.5 |
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