如图,AB∥CE,CE∥DF,表示∠BCD的是( )A.∠2-∠1 B.∠1+∠2 C.180°+∠1-∠2 D.180°+∠2-2∠1
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![如图,AB∥CE,CE∥DF,表示∠BCD的是( )A.∠2-∠1 B.∠1+∠2 C.180°+∠1-∠2 D.180°+∠2-2∠1](/uploads/image/z/1721247-15-7.jpg?t=%E5%A6%82%E5%9B%BE%2CAB%E2%88%A5CE%2CCE%E2%88%A5DF%2C%E8%A1%A8%E7%A4%BA%E2%88%A0BCD%E7%9A%84%E6%98%AF%EF%BC%88+%EF%BC%89A.%E2%88%A02%EF%BC%8D%E2%88%A01+B.%E2%88%A01%2B%E2%88%A02+C.180%C2%B0%2B%E2%88%A01%EF%BC%8D%E2%88%A02+D.180%C2%B0%2B%E2%88%A02%EF%BC%8D2%E2%88%A01)
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