三角形ABC(AB不等于AC)中,D,E在BC上,且DE=EC,过D作DF平行BA,交AE与点F,DF=AC.求证;AE平分角BAC
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![三角形ABC(AB不等于AC)中,D,E在BC上,且DE=EC,过D作DF平行BA,交AE与点F,DF=AC.求证;AE平分角BAC](/uploads/image/z/2755801-1-1.jpg?t=%E4%B8%89%E8%A7%92%E5%BD%A2ABC%28AB%E4%B8%8D%E7%AD%89%E4%BA%8EAC%29%E4%B8%AD%2CD%2CE%E5%9C%A8BC%E4%B8%8A%2C%E4%B8%94DE%3DEC%2C%E8%BF%87D%E4%BD%9CDF%E5%B9%B3%E8%A1%8CBA%2C%E4%BA%A4AE%E4%B8%8E%E7%82%B9F%2CDF%3DAC.%E6%B1%82%E8%AF%81%3BAE%E5%B9%B3%E5%88%86%E8%A7%92BAC)
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三角形ABC(AB不等于AC)中,D,E在BC上,且DE=EC,过D作DF平行BA,交AE与点F,DF=AC.求证;AE平分角BAC
三角形ABC(AB不等于AC)中,D,E在BC上,且DE=EC,过D作DF平行BA,交AE与点F,DF=AC.求证;AE平分角BAC
三角形ABC(AB不等于AC)中,D,E在BC上,且DE=EC,过D作DF平行BA,交AE与点F,DF=AC.求证;AE平分角BAC
大哥,有点难了,问老师把
因为DF‖BA所以ED/EB=DF/AB
因为DE=EC且DF=AC
所以EC/EB=AC/AB
就是AB/AE=AC/CE
所以AE平分角BAC