The number of angles (n) minus 2 times 180 or (n-2)180
For example a decagon has 10 angles so you would take
(10-2)180
(8)180
1440
The question has been asked "What is the angle sum of a thirteen sided polygon?" The answer to this question is 1980 degrees. The sum of the interior angles of a polygon of n sides = 180(n - 2)
A pentagon
15
(n-2)(180) use that formula to find the sum of the interior angles of a polygon in degree
The sum of the exterior angles of any polygon, including a 27 sided one, is 360 degrees.
Theorem 6-1-2; Polygon Exterior Angle Sum Theorem:The sum of the exterior angle measures, one angle at each vertex, of a convex polygon is 360 degrees.
No matter how many sides a convex polygon has, the sum of its exterior angles is 360°.
For any polygon: 180-interior angle = exterior angle and the exterior angles of any polygon add up to 360 degrees
360 ________________________________________________ Sum of Interior Angles of a Polygon = 180 (n-2) Sum of Exterior Angles of a Polygon = 360 The sum of an angle and an exterior angle of a regular polygon is 360
exterior angle theorem
44
It isn't a theorm, it is a formula. The formula states that for a polygon with S sides, the sum of the interior angles is equivilant to (S-2)times 180
polygon with 17 sides
A 29-sided polygon.
== ==
A dodecagon
The question has been asked "What is the angle sum of a thirteen sided polygon?" The answer to this question is 1980 degrees. The sum of the interior angles of a polygon of n sides = 180(n - 2)