如图,在△ABC中,AB=AC,∠ABC和∠ACB的平分线交于点O.
![](https://img.xkw.com/dksih/QBM/2019/6/14/2225508433133568/2225586010284032/STEM/ccd75477bb45448bb024c6c7e2a3a09c.png?resizew=116)
(1) 结合图形,请你写出你认为正确的结论;
(2) 过O作EF∥BC交AB于E,交AC于F. 请你写出图中所有等腰三角形,并探究EF、BE、FC之间的关系;
![](https://img.xkw.com/dksih/QBM/2019/6/14/2225508433133568/2225586010284032/STEM/7adebf4762ef4b87b99d768abd4fd3d7.png?resizew=91)
(3) 若AB≠AC,其他条件不变,图中还有等腰三角形吗?若有,请写出所有的等腰三角形,若没有,请说明理由;线段EF、BE、FC之间,上面探究的结论是否还成立?
![](https://img.xkw.com/dksih/QBM/2019/6/14/2225508433133568/2225586010284032/STEM/ccd75477bb45448bb024c6c7e2a3a09c.png?resizew=116)
(1) 结合图形,请你写出你认为正确的结论;
(2) 过O作EF∥BC交AB于E,交AC于F. 请你写出图中所有等腰三角形,并探究EF、BE、FC之间的关系;
![](https://img.xkw.com/dksih/QBM/2019/6/14/2225508433133568/2225586010284032/STEM/7adebf4762ef4b87b99d768abd4fd3d7.png?resizew=91)
(3) 若AB≠AC,其他条件不变,图中还有等腰三角形吗?若有,请写出所有的等腰三角形,若没有,请说明理由;线段EF、BE、FC之间,上面探究的结论是否还成立?
![](https://img.xkw.com/dksih/QBM/2019/6/14/2225508433133568/2225586010284032/STEM/5401b812c8384d03b2fafe4c727e4a90.png?resizew=91)
更新时间:2019-06-14 19:49:14
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【知识点】 等腰三角形的性质和判定
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