i need to know the answers i don’t get any of this and i need to pass this class

Answer:
1) 38
2) 36
3) 39
4) 55
Step-by-step explanation:
A straight line has an angle of 180 degrees. To find the answer to each one, you simply subtract the known angle from 180. For example, 180 - 142 = 38. The answer is the missing angle! Hope this Helps!