Hello! i am a bit stumped on this question, it is on angles. have a good day!

Answer:
123°
Step-by-step explanation:
you can first get angle 6;
<6+<7= 180(sum of angles on a straight line)
<6=180-<7
<6=123°
now you can get angle 8;
<8=<6(vertically opposite angles)
<8=123°