Answer:
∠3 and ∠6 are same-side interior angles.
Explanation:
Interior angles are angles that are between the parallel lines (m and n in this case). For these interior angles to be considered same-side, they must be on the same side of the angle that intersects the parallel lines (line t in this case).
As this follows these criteria, ∠3 and ∠6 are same-side interior angles.