在△ABC中,ACB=90°,AC=BC,点D是线段BC的中点,作点D关于AB对称点E,连接BE和CE,CE交AB于点F,交AD于点G.以点F为顶点作∠MFN等于90°,∠MFN点一边交BC的延长线于点M,交EB的延长线于点N,若AC=3,求BM-BN的值
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![在△ABC中,ACB=90°,AC=BC,点D是线段BC的中点,作点D关于AB对称点E,连接BE和CE,CE交AB于点F,交AD于点G.以点F为顶点作∠MFN等于90°,∠MFN点一边交BC的延长线于点M,交EB的延长线于点N,若AC=3,求BM-BN的值](/uploads/image/z/12662720-8-0.jpg?t=%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2CACB%3D90%C2%B0%2CAC%3DBC%2C%E7%82%B9D%E6%98%AF%E7%BA%BF%E6%AE%B5BC%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E4%BD%9C%E7%82%B9D%E5%85%B3%E4%BA%8EAB%E5%AF%B9%E7%A7%B0%E7%82%B9E%2C%E8%BF%9E%E6%8E%A5BE%E5%92%8CCE%2CCE%E4%BA%A4AB%E4%BA%8E%E7%82%B9F%2C%E4%BA%A4AD%E4%BA%8E%E7%82%B9G.%E4%BB%A5%E7%82%B9F%E4%B8%BA%E9%A1%B6%E7%82%B9%E4%BD%9C%E2%88%A0MFN%E7%AD%89%E4%BA%8E90%C2%B0%2C%E2%88%A0MFN%E7%82%B9%E4%B8%80%E8%BE%B9%E4%BA%A4BC%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%8E%E7%82%B9M%2C%E4%BA%A4EB%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%8E%E7%82%B9N%2C%E8%8B%A5AC%EF%BC%9D3%2C%E6%B1%82BM-BN%E7%9A%84%E5%80%BC)
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