Question

find the value of unknown angles
The final answer is 40 degree
pls explain step by step
no useless answer
The angle is an exterior angle
The sum of the exterior angle of a polygon is equal to 360s​

Answer 1

Answer:

Sum of exterior angles = 360°

90° + 80° +40° = 210°

x= 360° - 210°

= 150 °

Hope it helps...