The sum of the interior angles of a 14 sided polygon are 2160 degrees.
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3240
2160 degrees
The interior angles of a 14 sided polygon add up to 2160 degrees
The sum of the interior angles of a convex polygon with n sides is given by (n-2)x180o. So for a 40 sided polygon n=40; thus (40-2)x180o = 38x180o = 6840o.
the interior angle of a 7 sided regular polygon is 128.57 degrees