The polygon would be a heptagon.
So, the polygon would have 7 sides.
Any polygon can have two interior angles of 12 degrees. No polygon can have all its interior angles of 12 degrees.
If each interior angles is 179 degrees, then the polygon has 360 sides
35 sides
15 sides
A regular polygon with exterior angles of 30 degrees has: 360/30 = 12 sides
A polygon whose interior angles are 2880 degrees has 18 sides.
That's true if the interior angles are 108 degrees, but a regular polygon cannot have exterior angles of 108 degrees.
23 sides
36 sides.
If all of the interior angles of the polygon add up to 180 degrees, then the polygon is a triangle.
15 equal sides
It has 30 sides