C. Because a a polygon has all even sides so if you make a line of symmetry it would be even
A regular polygon is a polygon with n number of sides such that the measure of each side of the polygon is equal. The correct option is C.
A regular polygon is a polygon with n number of sides such that the measure of each side of the polygon is equal and the measure of the interior angle between any two consecutive sides is equal.
All regular polygons are symmetrical. This can be observed for any regular polygon with n number of sides.
Hence, All regular polygons are symmetrical.
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