已知矩形纸片ABCD,AB=2,AD=1,将纸片折叠,使顶点A与边CD上的点E重合.(1)如果折痕FG分别与AD、AB交与点F、G(如图1),,求DE的长;(2)如果折痕FG分别与CD、AB交与点F、G(如图2),△AED的外接圆与
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![已知矩形纸片ABCD,AB=2,AD=1,将纸片折叠,使顶点A与边CD上的点E重合.(1)如果折痕FG分别与AD、AB交与点F、G(如图1),,求DE的长;(2)如果折痕FG分别与CD、AB交与点F、G(如图2),△AED的外接圆与](/uploads/image/z/11577873-57-3.jpg?t=%E5%B7%B2%E7%9F%A5%E7%9F%A9%E5%BD%A2%E7%BA%B8%E7%89%87ABCD%2CAB%3D2%2CAD%3D1%2C%E5%B0%86%E7%BA%B8%E7%89%87%E6%8A%98%E5%8F%A0%2C%E4%BD%BF%E9%A1%B6%E7%82%B9A%E4%B8%8E%E8%BE%B9CD%E4%B8%8A%E7%9A%84%E7%82%B9E%E9%87%8D%E5%90%88.%EF%BC%881%EF%BC%89%E5%A6%82%E6%9E%9C%E6%8A%98%E7%97%95FG%E5%88%86%E5%88%AB%E4%B8%8EAD%E3%80%81AB%E4%BA%A4%E4%B8%8E%E7%82%B9F%E3%80%81G%EF%BC%88%E5%A6%82%E5%9B%BE1%EF%BC%89%2C%2C%E6%B1%82DE%E7%9A%84%E9%95%BF%EF%BC%9B%EF%BC%882%EF%BC%89%E5%A6%82%E6%9E%9C%E6%8A%98%E7%97%95FG%E5%88%86%E5%88%AB%E4%B8%8ECD%E3%80%81AB%E4%BA%A4%E4%B8%8E%E7%82%B9F%E3%80%81G%EF%BC%88%E5%A6%82%E5%9B%BE2%EF%BC%89%2C%E2%96%B3AED%E7%9A%84%E5%A4%96%E6%8E%A5%E5%9C%86%E4%B8%8E)
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