Answer:
X/2 = 61.2
X=122.4
Step-by-step explanation:
Ok so we know that a number was halved so we can use x and equaled to 61.2 so we can do x/2 = 61.2
60°
x + 160° + 140° = 360°
x + 300° = 360°
x = 360° - 300°
x = 60°
x = 180 - (31 + 40)
