八上数学几何变式题 如图,已知△DEF中,DE=DF,过EF上一点A作直线与DE交于点B,与DF的延长线交与点C,如果如图,已知△DEF中,DE=DF,过EF上一点A作直线与DE交于点B,与DF的延长线交与点C,如果BE=CF,试说明A
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![八上数学几何变式题 如图,已知△DEF中,DE=DF,过EF上一点A作直线与DE交于点B,与DF的延长线交与点C,如果如图,已知△DEF中,DE=DF,过EF上一点A作直线与DE交于点B,与DF的延长线交与点C,如果BE=CF,试说明A](/uploads/image/z/13333765-13-5.jpg?t=%E5%85%AB%E4%B8%8A%E6%95%B0%E5%AD%A6%E5%87%A0%E4%BD%95%E5%8F%98%E5%BC%8F%E9%A2%98+%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5%E2%96%B3DEF%E4%B8%AD%2CDE%3DDF%2C%E8%BF%87EF%E4%B8%8A%E4%B8%80%E7%82%B9A%E4%BD%9C%E7%9B%B4%E7%BA%BF%E4%B8%8EDE%E4%BA%A4%E4%BA%8E%E7%82%B9B%2C%E4%B8%8EDF%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%A4%E4%B8%8E%E7%82%B9C%2C%E5%A6%82%E6%9E%9C%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5%E2%96%B3DEF%E4%B8%AD%2CDE%3DDF%2C%E8%BF%87EF%E4%B8%8A%E4%B8%80%E7%82%B9A%E4%BD%9C%E7%9B%B4%E7%BA%BF%E4%B8%8EDE%E4%BA%A4%E4%BA%8E%E7%82%B9B%2C%E4%B8%8EDF%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%A4%E4%B8%8E%E7%82%B9C%2C%E5%A6%82%E6%9E%9CBE%3DCF%2C%E8%AF%95%E8%AF%B4%E6%98%8EA)
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