如图 F为平行四边形ABCD边AB上一点 连接DF交AC与G 延长DF交CB延长线于点E 求证DG*DE=DF*EG
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![如图 F为平行四边形ABCD边AB上一点 连接DF交AC与G 延长DF交CB延长线于点E 求证DG*DE=DF*EG](/uploads/image/z/2122977-57-7.jpg?t=%E5%A6%82%E5%9B%BE+F%E4%B8%BA%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E8%BE%B9AB%E4%B8%8A%E4%B8%80%E7%82%B9+%E8%BF%9E%E6%8E%A5DF%E4%BA%A4AC%E4%B8%8EG+%E5%BB%B6%E9%95%BFDF%E4%BA%A4CB%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%8E%E7%82%B9E+%E6%B1%82%E8%AF%81DG%2ADE%3DDF%2AEG)
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