如图,三角形abc中ad平分角bac,ad的垂直平分线交ab于e,交bc的延长线于点f,连接fa,求证:(1)角b=角fac; (2)de平行于ac
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![如图,三角形abc中ad平分角bac,ad的垂直平分线交ab于e,交bc的延长线于点f,连接fa,求证:(1)角b=角fac; (2)de平行于ac](/uploads/image/z/5199031-55-1.jpg?t=%E5%A6%82%E5%9B%BE%2C%E4%B8%89%E8%A7%92%E5%BD%A2abc%E4%B8%ADad%E5%B9%B3%E5%88%86%E8%A7%92bac%2Cad%E7%9A%84%E5%9E%82%E7%9B%B4%E5%B9%B3%E5%88%86%E7%BA%BF%E4%BA%A4ab%E4%BA%8Ee%2C%E4%BA%A4bc%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%8E%E7%82%B9f%2C%E8%BF%9E%E6%8E%A5fa%2C%E6%B1%82%E8%AF%81%EF%BC%9A%EF%BC%881%EF%BC%89%E8%A7%92b%3D%E8%A7%92fac%3B+%282%29de%E5%B9%B3%E8%A1%8C%E4%BA%8Eac)
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