Program:	Polygon
Author:	Rob Gaebler
Date:		2/17/99

	This program finds the area, minor radius (radius of the inscribed circle), and major radius (radius of the circumscribed circle) of REGULAR polygons, given the length of a side.  Actually, it will find those things for EVERY regular polygon, starting with an equilateral triangle.  The results are displayed as Y1, Y2, and Y3 on a table.  To view Y3 on the table, press the right-arrow three times.

	Also included in this program are a few polygon formulas.  The only one that needs explaining is the last one.  Pick's Theorem applies to any polygon with all its vertices on lattice points (points with integer x and y coordinates).  The formula of such a polygon is A=B+I/2-1, where B is the number of lattice points on the boundary (perimeter) of the polygon, and I is the number of lattice points inside the polygon.  The formula is included in the program's formula list because it is sometimes useful for advanced math contests.