Respuesta :

rebeccarayshma

Answer:

the sum of exterior angles of a polygon is 360°

Ver imagen rebeccarayshma
X + 20 + x + 40 + 2x + 2x = 360 degrees. This is because all exterior angles add up to 360. You then simplify and you have 6x+60=360 and then subtract 60 from both sides so you get 6x=300. Divide by 6 on both sides giving you x= 50.