Parallel lines n and m are cut by transversal p. On line n where it intersects line p, 4 angles are created. Labeled clockwise, from uppercase left, the angles are: 1, 2, 3, 4. On line m where it intersects line p, 4 angles are created. Labeled clockwise, from uppercase left, the angles are: 5, 6, 7, 8. In the diagram, m ∥ n and m and n are cut by transversal p. Which angle pairs are congruent? Check all that apply.

∠1 and ∠5
∠3 and ∠8
∠6 and ∠4
∠8 and ∠2
∠4 and ∠7