After unfolding the mystery behind uniqueness of π in my book 'Pi is not alone!' i was always haunted by a question - If Circle is similar like just other regular polygons then why it is so popular? In search of answer to the question i went into detail study of all regular polygons. The results were astonishing. during the process it was reaffirmed that circle is not unique as all the regular polygons have properties similar to circle and also the reason for wide use of circle was explained. I can only say that the circle is not unique but it is supreme.