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If the interior angles add up to 4320 degrees then it will have 26 sides
In a regular polygon, the formula to calculate the number of diagonals is n(n-3)/2, where n is the number of sides. For a 27-gon, there would be 27(27-3)/2 = 351 diagonals. These diagonals are line segments that connect non-adjacent vertices of the polygon.
(26-2)*180 = 4320 degrees
The sum of the exterior angles of any polygon add up to 360 degrees
4,320° is.