如图,在平行四边形ABCD中,对角线AC与BD相交于点O(1)若△AOB的周长是15,AB=5,则△OCD的周长是()用几何语言体现出过程若AC+BD=18,AB=5,则△OCD的周长是( )用几何语言体现出过程
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![如图,在平行四边形ABCD中,对角线AC与BD相交于点O(1)若△AOB的周长是15,AB=5,则△OCD的周长是()用几何语言体现出过程若AC+BD=18,AB=5,则△OCD的周长是( )用几何语言体现出过程](/uploads/image/z/3358231-7-1.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD%2C%E5%AF%B9%E8%A7%92%E7%BA%BFAC%E4%B8%8EBD%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9O%281%29%E8%8B%A5%E2%96%B3AOB%E7%9A%84%E5%91%A8%E9%95%BF%E6%98%AF15%2CAB%3D5%2C%E5%88%99%E2%96%B3OCD%E7%9A%84%E5%91%A8%E9%95%BF%E6%98%AF%EF%BC%88%EF%BC%89%E7%94%A8%E5%87%A0%E4%BD%95%E8%AF%AD%E8%A8%80%E4%BD%93%E7%8E%B0%E5%87%BA%E8%BF%87%E7%A8%8B%E8%8B%A5AC%EF%BC%8BBD%EF%BC%9D18%2CAB%3D5%2C%E5%88%99%E2%96%B3OCD%E7%9A%84%E5%91%A8%E9%95%BF%E6%98%AF%EF%BC%88+%EF%BC%89%E7%94%A8%E5%87%A0%E4%BD%95%E8%AF%AD%E8%A8%80%E4%BD%93%E7%8E%B0%E5%87%BA%E8%BF%87%E7%A8%8B)
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