Question

Calculate the ∠3, when AB || CD, ∠2 : ∠1 = 2 : 7

Answer 1

Answer:

40 degrees

Step-by-step explanation:

∠1+∠2=180             (Sum of interior angles on the same side of the transversal

                                is 180)

since,∠2:∠1=2:7

=> 2x+7x=180

x=20

therefore, ∠1=7*20=140 degrees

∠2=2*20=40 degrees

∠2=∠3=40 degrees      (alternate interior angles are equal)