Respuesta :

A nonagon had nine sides and the interiors angles equal 1260 degrees. X is on of those interior angles. So 1260/9 equals 140.
X =140
the answer above is correct, however, if you are seeing more of these questions in the future and don't know how to do it. you take the amount of sides (9) - 2 to get 7. Then multiply by 180 to get 1260. 1260/9 is 140