Answer:
The exterior angle is angle 4. The remote interior angles are 1 and 2.
Explanation:
An exterior angle is an angle that is between a side of the shape and a line extended from the side next to it.
Remote interior angles in a triangle are the two angles that are not a linear pair with the exterior angle. (A linear pair is a pair of angles that add up to 180 degrees and form a line.) Essentially, the they are the two angles not next to the exterior angle. As a side note, if you add up the measures of the remote interior angles, the sum will be equal to the measure of the exterior angle.
If any of this is confusing, feel free to ask for clarification. I hope this helps! ☺