Answer:
m∠B = 22°
Step-by-step explanation:
The sum of angles in a triangle is 180°, so we have ...
120° +(x +16)° +x° = 180°
136 +2x = 180 . . . . . . . . . collect terms, divide by °
68 +x = 90 . . . . . . . . . . . divide by 2
x = 22 . . . . . . . . . . . . . . . subtract 68
The value of x tells us the measure of angle B.
m∠B = 22°
