Answer:
Since angle 1 = angle 3 (vert opp angles),
angle 1 = angle 3 = 180°-129° (adj angles on a str line)
= 51°
angle 4 = angle 2 = 129° (vert opp angles)
Hence,
angle 1 = 51°
angle 3 = 51°
angle 4 = 129°
