Answer:
angle 8 = 78 degrees
Explanation:
angle 2 = 78 degrees
angle 4 is opposite to angle 2 so it is also 78 degrees
since lines a and b are parallel and angle 4 and angle 8 are both on the bottom right of the four angles of each line, angle 8 is the same as angle 4
so
angle 8 = 78 degrees