The answer depends on what elements of a nonagon you measure.
The nine interior angles of a nonagon add up to 1260 degrees
It is the sum of the lengths of the nine sides of the nonagon.
The sum of the angles in a nonagon total 1260 degrees.
It is a 9 sided nonagon and its 9 interior angles add up to 1260 degrees
The answer depends on what elements of a nonagon you measure.
1260
The nine interior angles of a nonagon add up to 1260 degrees
It is the sum of the lengths of the nine sides of the nonagon.
As for all polygons the exterior angles add up to 360 degrees
The sum of all the exterior angles of a nonagon is 360 degrees. Any specific exterior angle can have any value between 0 and 360 degrees (except 180) subject the their sum being 360.
It is the sum of the lengths of the nine sides of the nonagon.
The sum of the interior angles of a nonagon is 1260 degrees.
1345 * * * * * The above answer, submitted by the Answer Community is WRONG!
All exterior angles of any polygon sum to 360 deg. If there are 9 angles then each angle is 40 degrees.
The sum of the angles in a nonagon total 1260 degrees.
It is a 9 sided nonagon and its 9 interior angles add up to 1260 degrees