如图,已知AB=DE,BC=EF,AF=DC,则∠B=∠E,请说明理由.填空AC=AF-CF,DF=DC-CF.∵AF=DC(已知)∴AF-CD=DC-(),即AC=DF在△ABC和△DEF中.∵AC=DF,BC=EF(已知)AB=()()∴△ABC≌()(SSS)∴∠B=()(全等三角
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![如图,已知AB=DE,BC=EF,AF=DC,则∠B=∠E,请说明理由.填空AC=AF-CF,DF=DC-CF.∵AF=DC(已知)∴AF-CD=DC-(),即AC=DF在△ABC和△DEF中.∵AC=DF,BC=EF(已知)AB=()()∴△ABC≌()(SSS)∴∠B=()(全等三角](/uploads/image/z/10469961-9-1.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5AB%3DDE%2CBC%3DEF%2CAF%3DDC%2C%E5%88%99%E2%88%A0B%3D%E2%88%A0E%2C%E8%AF%B7%E8%AF%B4%E6%98%8E%E7%90%86%E7%94%B1.%E5%A1%AB%E7%A9%BAAC%3DAF-CF%2CDF%3DDC-CF.%E2%88%B5AF%3DDC%EF%BC%88%E5%B7%B2%E7%9F%A5%EF%BC%89%E2%88%B4AF-CD%3DDC-%EF%BC%88%EF%BC%89%2C%E5%8D%B3AC%3DDF%E5%9C%A8%E2%96%B3ABC%E5%92%8C%E2%96%B3DEF%E4%B8%AD.%E2%88%B5AC%3DDF%2CBC%3DEF%EF%BC%88%E5%B7%B2%E7%9F%A5%EF%BC%89AB%3D%EF%BC%88%EF%BC%89%EF%BC%88%EF%BC%89%E2%88%B4%E2%96%B3ABC%E2%89%8C%EF%BC%88%EF%BC%89%EF%BC%88SSS%EF%BC%89%E2%88%B4%E2%88%A0B%3D%EF%BC%88%EF%BC%89%EF%BC%88%E5%85%A8%E7%AD%89%E4%B8%89%E8%A7%92)
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