Question

Please solve the above problem 3

Answer 1

a+ b +140 =360
a+b = 360-140
a+b= 220 °

Answer 2

the total measure of a complete angle is 360°
one of the angle is given=140°
a+b+140=360°
a+b=360°-140°
a+b=220°
So, we can conclude that a+b is 220°