stylistic:style_transfer
Regular polygons

The radius r of a regular polygon with n sides of length s is given by r = R s, where R n = 1 / (2 sin π n). {\displaystyle R_{n}=1\left/\left(2\sin {\frac {\pi }{n}}\right)\right..} Values of R for small values of n are given in the table. If s = 1 then these values are also the radii of the corresponding regular polygons.