In the given figure, two parallel lines are intersected by a transversal. The pairs, ∠ 2 & ∠ 6 and ∠ 4 & ∠ 8 are __________ .
If two parallel lines are intersected by a transversal then, pair of alternate interior angles are:
In the given figure two parallel lines l,m are intersected by a tranversal. If ∠4=45∘ then ∠3 and ∠6 are