Question

angle abc =80° angle efg =45° and angle egf = 35° prove ab is parallel to de​

Answer 1

Answer:

Angle AB = 80{ GIVEN }

Step-by-step explanation:

Angle BCD = Angle BCE + ECD = 35 + 45 = 80.

They are alternate angles

So, AB parallel CD ----------(1)

=> Angle ECD + Angle CEF = 180

=> Angle ECD & Angle CEF are Co-interior

=> EF parallel to CD -------------(2)

=> From (1) & (2)

=> AB parallel to CD & CD parallel EF

=> CD will be cancelled

=> AB parallel to DE

Step-by-step explanation: