已知,如图,∠1=∠ABC=∠ADC ∠3=∠5,∠2=∠4,∠ABC+∠BCD=180°,将下列推理过程补充完整∵∠1=∠ABC(已知0∴AD//( ) 根据( )∵∠3=∠5(已知)∴AB//( )根据( )∵∠ABC+∠BCD=180°

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已知,如图,∠1=∠ABC=∠ADC∠3=∠5,∠2=∠4,∠ABC+∠BCD=180°,将下列推理过程补充完整∵∠1=∠ABC(已知0∴AD//()根据()∵∠3=∠5(已知)∴AB//()根据()

已知,如图,∠1=∠ABC=∠ADC ∠3=∠5,∠2=∠4,∠ABC+∠BCD=180°,将下列推理过程补充完整∵∠1=∠ABC(已知0∴AD//( ) 根据( )∵∠3=∠5(已知)∴AB//( )根据( )∵∠ABC+∠BCD=180°
已知,如图,∠1=∠ABC=∠ADC ∠3=∠5,∠2=∠4,∠ABC+∠BCD=180°,将下列推理过程补充完整
∵∠1=∠ABC(已知0
∴AD//(   )   根据(            )
∵∠3=∠5(已知)
∴AB//(  )根据(    )
∵∠ABC+∠BCD=180°(已知)
∴(   )//(   )根据(  )

已知,如图,∠1=∠ABC=∠ADC ∠3=∠5,∠2=∠4,∠ABC+∠BCD=180°,将下列推理过程补充完整∵∠1=∠ABC(已知0∴AD//( ) 根据( )∵∠3=∠5(已知)∴AB//( )根据( )∵∠ABC+∠BCD=180°
bc(同位角相等,两直线平行.)
dc(内错角相等,两直线平行.)
ab∥cd(同旁内角互补,两直线平行.)