Question

angle ACD is an exterior angle and of exterior angle of triangle ABC the measure of angle A and Angle B are equal if a measure of angle ACD equals to 140 degree find the measure of angle A and Angle B

Answer 1

As a and b are equal so let a and b be x
angle sum property
140+x+x=360
140+2x=360
360-140=2x
220=2x
220/2=x
110=x
measure of a and b is 110
let's check
110+110+140=360
yep correct