Question

Do same-side interior angles have to be on the same (in this case) horizontal line?

Answer 1

if the horizontal lines are all parallel, then yes, as long as the angles are on the same side. If the horizontal lines are parallel but the angles are on opposite sides, then no. If the horizontal lines are not parallel, then it would require more work to figure it out

Answer 2

Yes because it’s called same side interior so same lineee