Are circles infinite sided polygons?

No.12825699 ViewReplyOriginalReport
When you draw the pictures, like pic rel, it's obvious that when you take the limit of infinite sided regular polygons, you get a circle. Yet every single formula you ever find describing properties of the n-sided regular polygon (area, perimeter, inner angle, outer angle) don't yield the correct terms for a circle. What's going on? How do you formally take an equation describing the property of a regular n-gon (say, perimeter), and then take the limit of infinite sides to get the correct quantity (circumference) for a circle?