It is: (13-2)*180 = 1980 degrees
6
A polygon with any number of sides can have an interior angle measuring 108 degrees.
If the interior angles of a polygon add up to 1980 degrees then it has 13 sides
(number of sides-2)*180 = total sum of interior angles
The smallest regular polygon, an equilateral triangle, has interior angles of 60. A square has interior angles of 90. There can't exist a regular polygon with interior angles of 30.
A polygon has two types of measurements: side lengths and interior angles. The number of side lengths is equal to the number of sides the polygon has, while the number of interior angles is always equal to the number of sides. So, a polygon has two measurements: side lengths and interior angles.
Same-side interior angles are supplementary. They are not always congruent, but in a regular polygon adjacent angles are congruent.
The interior angles of a 40 sided polygon add up to 6840 degrees
If measured on the inside of the polygon, the it is an interior angle.
For any polygon of N sides, the sum of the interior angles (in degrees) is 180*N-360, which for N=20 is 3240°
Suppose the polygon has n sides Then sum of interior angles = (n-2)*180 degrees = 3960 degrees so n-2 = 3960/180 = 22 and so n = 24
If you mean interior angles of 2800 degrees then no such polygon exist because one of its sides woud not meet up with another side.