∵∠BAD+∠ADC+∠ABC+∠BCD=360,∠ABC=80,∠BCD=70
∴∠BAD+∠ADC=360-(∠ABC+∠BCD)=210
∵AE平分∠BAD
∴∠EAD=∠BAD/2
∵DE平分∠ADC
∴∠EDA=∠ADC/2
∴∠AED=180-(∠EAD+∠EDA)
=180-(∠BAD/2+∠ADC/2)
=180-210/2
=75
∵∠BAD+∠ADC+∠ABC+∠BCD=360,∠ABC=80,∠BCD=70
∴∠BAD+∠ADC=360-(∠ABC+∠BCD)=210
∵AE平分∠BAD
∴∠EAD=∠BAD/2
∵DE平分∠ADC
∴∠EDA=∠ADC/2
∴∠AED=180-(∠EAD+∠EDA)
=180-(∠BAD/2+∠ADC/2)
=180-210/2
=75