【就一题】如图,在ΔABC中,D是AC上一点,E是AB延长线上一点,连DE,交BC于F.试说明当DF=EF时,必定有DC=BE.【主要是思路】再加条件:AB=AC
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![【就一题】如图,在ΔABC中,D是AC上一点,E是AB延长线上一点,连DE,交BC于F.试说明当DF=EF时,必定有DC=BE.【主要是思路】再加条件:AB=AC](/uploads/image/z/3930419-11-9.jpg?t=%E3%80%90%E5%B0%B1%E4%B8%80%E9%A2%98%E3%80%91%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%CE%94ABC%E4%B8%AD%2CD%E6%98%AFAC%E4%B8%8A%E4%B8%80%E7%82%B9%2CE%E6%98%AFAB%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%B8%8A%E4%B8%80%E7%82%B9%2C%E8%BF%9EDE%2C%E4%BA%A4BC%E4%BA%8EF.%E8%AF%95%E8%AF%B4%E6%98%8E%E5%BD%93DF%3DEF%E6%97%B6%2C%E5%BF%85%E5%AE%9A%E6%9C%89DC%3DBE.%E3%80%90%E4%B8%BB%E8%A6%81%E6%98%AF%E6%80%9D%E8%B7%AF%E3%80%91%E5%86%8D%E5%8A%A0%E6%9D%A1%E4%BB%B6%EF%BC%9AAB%3DAC)
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