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A 7 sided polygon has 14 diagonals
A 14 sided polygon has 14 angles. If this polygon is a regular polygon, then in order to find the sum of the angles we can use the formula, (n - 2)180°, where n is the number of the sides. (n - 2)180° = (14 - 2)180° = 2,160° Thus each angle will be approximately 154.29° (2,160°/14).
The sum of the angles in an N sided polygon is 180°(N - 2)The angle of a single angle then would be:180°(N - 2)/N= 180° - 360°/NSo in the case of a 14 sided regular polygon, a single angle would be:180° - 360° / 14= 180° - 180° / 7= 6/7 * 180°= 1080°/7≈ 150.286°
It will have 14 sides