It will have (1980+360)/180 = 13 sides
It will have (1980+360)/180 = 13 sides
The interior angles of a 13 sided polygon add up to 1980 degrees
6
If it is a regular polygon and each interior angle measures 156 degrees then it will have 15 sides
If the interior angles of a polygon add up to 1980 degrees then it has 13 sides
It will have (1980+360)/180 = 13 sides
It will have (1980+360)/180 = 13 sides
1980 degrees
13 sides
It is: (13-2)*180 = 1980 degrees
Sum of exterior angles = 360 degrees Sum of interior angles = 1980 degrees
13 * (180 - 360/13) = 1980 degrees
The interior angles of a 13 sided polygon add up to 1980 degrees
The 13 interior angles add up to 1980 degrees
1800 degrees
If each angle measures 90 degrees the polygon is a square and so its angles sum to 360 degrees.