Question

an octagan has two equal angles each 120° and all the remaining six angles are equal . find the measure of each of the six equal angles

Answer 1

as the angle sumproperty of exterior angle is 720
2 angles :120
720-120=600
600/6=100

Answer 2

An octagon has two equal angles each 120° and all the remaining six angles are equal. Find the measure of each of the six angles


An octagon has two equal angles each 120° and all the remaining six angles are equal. Find the measure of each of the six angles. 
Angle sum of octagon will be =(n-2)x180=(8-2)x180=6x180 degree 
as per given conditions two angles are 120 degree each and other six angles are equal . let six equal angle are X
six angle will be 6x


120+120+ 6 X =6x180
240+6X = 1080
6X=1080-240=840
X=840/6=140 degree 
answer 140 degree