Question

show that AB||EF if angle B=60° ,angle BCE=35° , angle ECD=25° and angle E=155°​

Answer 1

Answer:

answered in the attachment

Answer 2

Answer:

expand E to bc

angle E +155 is equal to 180 ( linear pair )

angle E is equal to 180-155

angle E is equal to 25

in triangle GEC

angle G + 25 +35 is equal to 180

angle G is equal to 180-60

angle G is equal to 120

there fore AB parallel EF

hence proved