Question

in the given figure show that AB||CD
​

Answer 1

Answer:

I will answer later you can given according to my words

Answer 2

Answer:

Step-by-step explanation:

Angle ABC=70°

Angle BCD=Angle BCE+Angle ECD

Angle BCD=40°+30°

=70°

Angle ABC=Angle BCD

70°=70°

But they are forming alternate angles

By transversal BC

therefore,AB||CD

Hence proved