It need not have any.
If it has an even number of sides, say 2n (where n>1), then it can have n pairs of parallel sides.
If it has an odd number of sides, say 2n+1 (where n>1), then it can have n pairs of parallel sides.
it has four sides
The answer depends on the number of sides in the polygon.
It has 16 sides
33 sides
14
It depends if the polygon is convex or concave but if it is a regular polygon it would have 560
No matter how many sides a convex polygon has, the sum of its exterior angles is 360°.
The sum of the exterior angles of any polygon - no matter how many sides, no matter whether it is convex or concave - is 360 degrees.
The sum of the exterior angles of any polygon - however many sides it has and whether it is convex or concave - is always 360 degrees.
120*(120-3)/2 = 7020
The exterior angles of a polygon always total 360 degrees. That doesn't even depend on how many sides the polygon has.
If the question is: If the exterior angle of a regular polygon is 45 degrees, how many sides does the polygon have? then the answer is:the sum of the exterior angles of any convex polygon is 360so 360/45 = 8