It is 8 x180=1440 degrees. Take an n-gon and the measure of the interior angles is (n-2)x180 degrees.
5040
The total internal angles of an n-gon are given by pi*n-2pi. The individual angles, therefore, are given by (pi*n-2pi)/n For a regular convex n=31, the interior angles are each 9.233 radians to 4 sf.
The interior angles of a 24-agon add up to 3960 degrees.
The sum of the interior angles of an n-gon is (n-2)*180.
Each interior angle measures 140 degrees.
the sum of the interior angles of a convex 45-gon is 7740.
the sum of the interior angles of a 35-gon.
The sum of the exterior angles of any convex polygon is always 360 degrees. The sum of the interior angles of any convex n-gon is (n-2) * 180 degrees, because any convex n-gon can be represented as n-2 triangles, and the sum of the interior angles of a triangle is 180 degrees.
The sum of the interior angles of a n-gon is (n-2)*180 degrees. Convexity does not matter. So for a 17-gon, the sum would be 15*180 = 2700 degrees.
3,600°
hi
1620
Yes
6120 degrees
5040
The answer depends on what you wish to measure: the area, the number of sides, the number of vertices, the sum of the interior angles, the sum of exterior angles, ... The question is hopelessly underspecified.
Interior angles of a regular 18 gon (octdecagon) are 160o.