解答题-作图题 适中0.65 引用4 组卷967
如图,在△ABC中,AB=BC,点E在边AB上,EF⊥AC于F.
(1)尺规作图:过点A作AD⊥BC于点D(保留作图痕迹,不写作法);
(2)求证:∠CAD=∠AEF;
(3)若∠ABC=45°,AD与EF交于点G,求证:EG=2AF.
![](https://img.xkw.com/dksih/QBM/2017/10/21/1799983040888832/1800004268998657/STEM/8564cf5cdb3048cbbfb6e39c22518f0a.png?resizew=112)
(1)尺规作图:过点A作AD⊥BC于点D(保留作图痕迹,不写作法);
(2)求证:∠CAD=∠AEF;
(3)若∠ABC=45°,AD与EF交于点G,求证:EG=2AF.
![](https://img.xkw.com/dksih/QBM/2017/10/21/1799983040888832/1800004268998657/STEM/8564cf5cdb3048cbbfb6e39c22518f0a.png?resizew=112)
2015·广东广州·一模
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