解答题-证明题 适中0.65 引用5 组卷419
如图,AD是△ABC的角平分线,DE⊥AB,DF⊥AC,垂足分别是E,F,连接EF,EF与AD相交于点G.
(1)求证:AD是EF的垂直平分线;
(2)若△ABC的面积等于16,AB+AC=8,求ED.
![](https://img.xkw.com/dksih/QBM/2021/8/27/2794933738094592/2797488120209408/STEM/aafb80c7982d4c7e9a944a5e044d0f80.png?resizew=177)
(1)求证:AD是EF的垂直平分线;
(2)若△ABC的面积等于16,AB+AC=8,求ED.
![](https://img.xkw.com/dksih/QBM/2021/8/27/2794933738094592/2797488120209408/STEM/aafb80c7982d4c7e9a944a5e044d0f80.png?resizew=177)
20-21八年级下·四川达州·期末
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