= ∠1 + ∠2 = 180° ( as they are a linear pair whose sum will be equal to 180° )
= 112° + ∠2 = 180°
= ∠2 = 180 - 112
= ∠2 = 68°
As we can see ∠2 = ∠3 = 68°
∠2 and ∠3 are corresponding angles , which means they will be equal if they are made on two parallel lines with a transversal .
As ,
= ∠2 = ∠3 ( corresponding angles in a transversal are equal )
= 68° = 68°
Therefore , line 1 and line 2 are parallel as their corresponding angles are equal .
