Lines B and C are Parallel.
What is the measure of angle 6?

Answer:
54°
Step-by-step explanation:
we know that corresponding angles = 180°
step 1) add 5x+9 and 13x+9
answer = 18x+18=180
step 2) solve for x
answer = x=9
step 3) plug the x into the angle congruent to 6 which will be 5x+9
final answer is 54°