Quadrilaterals.
It is a 15 sided polygon
It depends on what type of polygon it is and how many angles it has.
a regular polygon
Hexagon
hexagon which has 6 sides
A quadrilateral.
A nonagon aka enneagon
It is a 15 sided polygon
any polygon
It depends on what type of polygon it is and how many angles it has.
a regular polygon
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.
Hexagon
Yes, a regular polygon is a type of polygon where all the sides and angles are equal.
hexagon which has 6 sides
There is no way to work out the angles in a general polygon. The sum of the interior angles of a polygon, with n sides, is (n-2)*pi radians [or (n-2)*180 degrees]. Therefore, if you know the measure of n-1 angles, you can work out the size of the nth angle.Alternatively, if the polygon is one of the rare type - a regular polygon - then all its angles are equal. In that case, you can divided the above sum by n.
A 16 sided polygon.