如图,ABCD是一张矩形纸片,AD=BC=1,AB=CD=5.在矩形ABCD的边AB上取一点M,在CD上取一点N,将纸片沿MN折叠,使MB与DN交于点K,得到△MNK.(1)若∠1=∠MNK=70°,求∠MKN的度数(2)在△MNK中,KM=KN,△MNK的面积能否
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![如图,ABCD是一张矩形纸片,AD=BC=1,AB=CD=5.在矩形ABCD的边AB上取一点M,在CD上取一点N,将纸片沿MN折叠,使MB与DN交于点K,得到△MNK.(1)若∠1=∠MNK=70°,求∠MKN的度数(2)在△MNK中,KM=KN,△MNK的面积能否](/uploads/image/z/7806344-32-4.jpg?t=%E5%A6%82%E5%9B%BE%2CABCD%E6%98%AF%E4%B8%80%E5%BC%A0%E7%9F%A9%E5%BD%A2%E7%BA%B8%E7%89%87%2CAD%3DBC%3D1%2CAB%3DCD%3D5%EF%BC%8E%E5%9C%A8%E7%9F%A9%E5%BD%A2ABCD%E7%9A%84%E8%BE%B9AB%E4%B8%8A%E5%8F%96%E4%B8%80%E7%82%B9M%2C%E5%9C%A8CD%E4%B8%8A%E5%8F%96%E4%B8%80%E7%82%B9N%2C%E5%B0%86%E7%BA%B8%E7%89%87%E6%B2%BFMN%E6%8A%98%E5%8F%A0%2C%E4%BD%BFMB%E4%B8%8EDN%E4%BA%A4%E4%BA%8E%E7%82%B9K%2C%E5%BE%97%E5%88%B0%E2%96%B3MNK%EF%BC%8E%281%29%E8%8B%A5%E2%88%A01%3D%E2%88%A0MNK%3D70%C2%B0%2C%E6%B1%82%E2%88%A0MKN%E7%9A%84%E5%BA%A6%E6%95%B0%EF%BC%882%EF%BC%89%E5%9C%A8%E2%96%B3MNK%E4%B8%AD%2CKM%3DKN%2C%E2%96%B3MNK%E7%9A%84%E9%9D%A2%E7%A7%AF%E8%83%BD%E5%90%A6)
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