Octagon
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It varies regarding the number of sides of polygon.Additional Information:-The formula is for any polygon: n-2 = number of interior triangles whereas n represents the number of sides of the polygon
A polygon can only have sides. There are no interior or exterior sides: all sides are the boundaries of a polygon. They could be called equilateral although that names seems to be reserved for triangles.
...eight interior and exterior angles. ANGLES
Triangles, rectangles and octagons are all examples of a polygon. A polygon is a polygon whose sides are the same length and whose interior angles are the same measure
2700⁰/180⁰ = 15 (triangles)So the polygon has 17 sides.