正方形ABCD中,AB等于根号2,E为BD上一点,且BE等于BC,p为Ce上一点,PM垂直BE于M,PN垂直BC于N,求PM+PNPM等于Pn,
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![正方形ABCD中,AB等于根号2,E为BD上一点,且BE等于BC,p为Ce上一点,PM垂直BE于M,PN垂直BC于N,求PM+PNPM等于Pn,](/uploads/image/z/12675533-5-3.jpg?t=%E6%AD%A3%E6%96%B9%E5%BD%A2ABCD%E4%B8%AD%2CAB%E7%AD%89%E4%BA%8E%E6%A0%B9%E5%8F%B72%2CE%E4%B8%BABD%E4%B8%8A%E4%B8%80%E7%82%B9%2C%E4%B8%94BE%E7%AD%89%E4%BA%8EBC%2Cp%E4%B8%BACe%E4%B8%8A%E4%B8%80%E7%82%B9%2CPM%E5%9E%82%E7%9B%B4BE%E4%BA%8EM%2CPN%E5%9E%82%E7%9B%B4BC%E4%BA%8EN%2C%E6%B1%82PM%EF%BC%8BPNPM%E7%AD%89%E4%BA%8EPn%EF%BC%8C)
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