1, 260 degrees
the interior angle of a 7 sided regular polygon is 128.57 degrees
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(24-2)*180 = 3960 degrees
A 29-sided polygon.
The sum of the internal angles of an n-sided polygon is (n-2)*180 degrees. So, for a regular polygon, each internal angle is (n-2)*180/n degrees.
Sum of exterior angles of any sided polygon is 360 so sum of exterior angle of 6 sided polygon (hexagon) is 360
It's 900 degrees, and it doesn't matter whether the 7-sided polygon is regular or not.
1620
4320
If a dectagon is another word for a decagon then this is a 10 sided polygon. No matter how many sides it has, the sum of the external angles of a convex or regular polygon is 360°.
The sum of the interior angles of a 14 sided polygon are 2160 degrees.
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)