Question

AB||CD AND ANGLE F =30 DEGREES. FIND ANGLE ECD

Answer 1

in AFE
angle AEF =180-(90+30)=180-120=60
then angle CEB=60(vertically opposite angle)
angle CEB + angle ECD=180(same side of traversal line)
then, angle ECD=180-60=120

Answer 2

Answer:

ECD= 120

Step-by-step explanation

FEB=AFE+FAE (exterior angle property)

FEB=30+90=120

FEB=ECD (corresponding angles)

ECD= 120