题型:单选题
难度:0.4
引用次数:541
题号:14723844
如图,在等边△ABC中,AD⊥BC于D,延长BC到E,使CE=
BC,F是AC的中点,连接EF并延长EF交AB于G,BG的垂直平分线分别交BG,AD于点M,点N,连接GN,CN,下列结论:①∠ACN=∠BCN;②GF=
EF;③∠GNC=120°;④GM=CN;⑤EG⊥AB,其中正确的个数是( )
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878910074634240/2880343228301312/STEM/8fb62d0bee1a421d86f46775b6375b86.png?resizew=145)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878910074634240/2880343228301312/STEM/8fb62d0bee1a421d86f46775b6375b86.png?resizew=145)
A.2个 | B.3个 | C.4个 | D.5个 |
更新时间:2021-12-25 21:36:12
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![](https://img.xkw.com/dksih/QBM/2021/5/13/2720321877770240/2783222579060736/STEM/8e8c4759-6236-4006-8596-98676fa6c6fd.png)
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A.①②④ | B.②③⑤ | C.①②⑤ | D.①④⑤ |
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A.①② | B.②③ | C.①②③ | D.①②④ |
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【推荐2】如图,O为正△ABC内一点,OA=3,OB=4,OC=5,将线段BO以点B为旋转中心逆时针旋转60°得到线段BO′,下列结论:
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①
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