如图,平行四边形ABCD中,AB=5,BC=10,BC边上的高AM=4,E为 BC边上的一个动点(不与B、C重合).过E作直线AB的垂线,垂足为F. FE与DC的延长线相交于点G,连结DE,DF.(1) 当点E在线段BC上运动时,△BEF
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![如图,平行四边形ABCD中,AB=5,BC=10,BC边上的高AM=4,E为 BC边上的一个动点(不与B、C重合).过E作直线AB的垂线,垂足为F. FE与DC的延长线相交于点G,连结DE,DF.(1) 当点E在线段BC上运动时,△BEF](/uploads/image/z/5397473-65-3.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD%2CAB%EF%BC%9D5%2CBC%EF%BC%9D10%2CBC%E8%BE%B9%E4%B8%8A%E7%9A%84%E9%AB%98AM%3D4%2CE%E4%B8%BA+BC%E8%BE%B9%E4%B8%8A%E7%9A%84%E4%B8%80%E4%B8%AA%E5%8A%A8%E7%82%B9%EF%BC%88%E4%B8%8D%E4%B8%8EB%E3%80%81C%E9%87%8D%E5%90%88%EF%BC%89%EF%BC%8E%E8%BF%87E%E4%BD%9C%E7%9B%B4%E7%BA%BFAB%E7%9A%84%E5%9E%82%E7%BA%BF%2C%E5%9E%82%E8%B6%B3%E4%B8%BAF%EF%BC%8E+FE%E4%B8%8EDC%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9G%2C%E8%BF%9E%E7%BB%93DE%2CDF%EF%BC%8E%EF%BC%881%EF%BC%89+%E5%BD%93%E7%82%B9E%E5%9C%A8%E7%BA%BF%E6%AE%B5BC%E4%B8%8A%E8%BF%90%E5%8A%A8%E6%97%B6%2C%E2%96%B3BEF)
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