如图,已知∠BAP与∠APD互补,∠1=∠2,在括号中填上理由.∵∠BAP与∠APD互补 ( )∴AB∥CD ( )∴∠BAP=∠APC ( )又∵∠1=∠2( )所以∠BAP-∠1=∠APC-∠2 ( )即∠3=∠4∴AE∥PF ( )∴∠E=∠F ( )
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