Answer:
Angle 2, 4, 6 are exterior angles, see below
Step-by-step explanation:
Exterior Angles are what they sound like, they are angles on the outside of a traingle.
HOWEVER, the angles that are vertical to the ones in sides are not exterior angles. Angle 3 is not an exterior angle. All the other ones outside are.
Angle 2, 4, 6 are exterior angles
