Answer:
12
Step-by-step explanation:
180 ÷ 15 = 12
15 can go into 180 , 12 times
15 x 12 = 180
Supplementary angle = 180
180 - 51 = x
x = 129
C) 129 degrees is your answer
hope this helps
Answer:
What is the Question so I can answer?
Step-by-step explanation: