A 13 sided polygon also called a triskaidecagon or tridecaogn has a total 1980 degrees for its interior angles.
A 6 sided polygon is called a Hexagon. The sum of the interior angles or a regular hexagon is 720 degrees.
Improved Answer:-A 6 sided polygon is an hexagon and its 6 interior angles add up to 720 degrees
If all of its interior angles are equal then it is a regular polygon
It has 9 sides and is called a nonagon
It is an hexagon which is a 6 sided polygon with 6 interior angles that add up to 720 degrees.
A polygon with 10 sides is called decagon and the sum of the interior angles is 1440 degrees. (10-2)180=1440
If you mean an 11 sided polygon then its 11 interior angles add up to 1620 degrees
In a polygon there are no such angles.
Quindecagon or pentadecagona 15 sided pollygon is called a Pentadecagon, it has interior angles of 156 degrees each
It is a hexagon.
A twenty-sided polygon is called an "icosagon." If it is a regular icosagon - all its sides and angles are equal - then it's interior angles are all 162 degrees. You can verify this by drawing a line to the center from each angle.. There will be 20 small angles arranged in a circle around the center. These must total 360 degrees. As 360 / 20 = 18, this leaves the other angles of each triangle to add up to 162, because the interior angles of a triangle total 180 degrees.