Answer:
22 degrees
Step-by-step explanation:
To calculate the measure of the third angle, add the other two measure of the other angles together and subtract that from 180
127 + 31 = 158
180 - 158 = 22
the missing angle measure is 22 degrees
22º
180º=x+127º+31º
180º-31º=x+127º+31º-31º
149º=x+127º
149º-127º=x+127º-127º
22º=x
