Plzz statements about the angles of the triangle are true? check all that apply. 1)angle 1 is an exterior angle.2)angle 2 is an exterior angle.3)angle 4 is an exterior angle.4)angle 7 is an adjacent interior angle.5)angle 6 is an adjacent interior angle. it is adjacent to the exterior angle 4. 6)angles 6 and 8 are remote interior angles to the exterior angle 1.7)angles 6 and 7 are remote interior angles to the exterior angle 2.8)angles 7 and 8 are remote interior angles to the exterior angle 4.