Answer: Hence, Options (1), (2), (3), (6), (7) are correct.
Step-by-step explanation:
Since we have given the figure:
According to figure, we get that
Angle 1, Angle 2, Angle 4 are exterior angles.
Angles 6 and 8 are remote interior angles to the exterior angle 1.
Because ∠6+∠8 = ∠1
Angles 6 and 7 are remote interior angles to the exterior angle 2.
Because ∠6+∠7 = ∠2
Hence, Options (1), (2), (3), (6), (7) are correct.