Question

Which of the following are remote interior angles of 5? Check all that apply.

I think 3 is one?

Answer 1

Yes, ∠1 and ∠2 are the remote interior angles of ∠5, but ∠3 is not.
You're looking for the remote interior angles, so while ∠3 has a measure that when added to ∠5 = 180°, it is adjacent to ∠5 so it is not remote from it.

Answer 2

The correct options are A) ∠1 and B) ∠2

Explanation:

Consider the provided figure.

We need to find the remote interior angle of ∠5.

∠5 is an exterior angle.

Remote interior angles: The two angles inside the triangle are the remote interior angles that do not share a vertex with the outside angle.

The exterior angle value is equal to the sum of its two remote angles measurements.

Now consider the provided figure.

The two angles inside the triangle that do not share a common vertex with ∠5 are ∠1 and ∠2

Therefore, the correct options are A) ∠1 and B) ∠2