In Fig 8.115, ∠1=60° and ∠2= if a right angle. Prove that l||m.
Given,
∠1 = 60o
∠2 = of right angle
To prove: l ‖ m
Proof: ∠1 = 60o
∠2 = * 90o = 60o
Since, ∠1 = ∠2 = 60o
Therefore, l ‖ m as pair of corresponding angles are equal.