A polygon having 30 degree exterior angles is a dodecagon having 12 sides.
7 sides
8 sides
11 sides
7 sides, which makes it a heptagon. A polygon is any shape with 3 or more sides.
A 1260 degree polygon has nine sides. The formula for determining this is (n*180)+2, with n being equal to the degrees in the interior of the polygon.
The perimeter of a polygon is the sum of the length of each of its sides. If the polygon is a regular polygon the you can calculate the perimeter as [number of sides] *[the length of one side]
38.3,176,4,64,124.10
48
6
57
14 sides in the polygon