请教一道八年级数学竞赛题(几何证明题).已知四边形ABCD是正方形,FE均在AD边的延长线上,且AD=DF,DE=BD,BE与CE交于点H,BE与CD交于点G,求证:GH=HE.
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![请教一道八年级数学竞赛题(几何证明题).已知四边形ABCD是正方形,FE均在AD边的延长线上,且AD=DF,DE=BD,BE与CE交于点H,BE与CD交于点G,求证:GH=HE.](/uploads/image/z/15009970-58-0.jpg?t=%E8%AF%B7%E6%95%99%E4%B8%80%E9%81%93%E5%85%AB%E5%B9%B4%E7%BA%A7%E6%95%B0%E5%AD%A6%E7%AB%9E%E8%B5%9B%E9%A2%98%EF%BC%88%E5%87%A0%E4%BD%95%E8%AF%81%E6%98%8E%E9%A2%98%EF%BC%89.%E5%B7%B2%E7%9F%A5%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E6%98%AF%E6%AD%A3%E6%96%B9%E5%BD%A2%2CFE%E5%9D%87%E5%9C%A8AD%E8%BE%B9%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%B8%8A%2C%E4%B8%94AD%3DDF%2CDE%3DBD%2CBE%E4%B8%8ECE%E4%BA%A4%E4%BA%8E%E7%82%B9H%2CBE%E4%B8%8ECD%E4%BA%A4%E4%BA%8E%E7%82%B9G%2C%E6%B1%82%E8%AF%81%EF%BC%9AGH%3DHE.)
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