JT
Posts:
1,272
Registered:
4/7/12


Re: Trying to find perimeter of a regular pentagon
Posted:
May 29, 2013 7:42 AM


On 29 Maj, 10:02, rich...@cogsci.ed.ac.uk (Richard Tobin) wrote: > In article <8701b958a2194d6ab2e4913160165...@l5g2000vbn.googlegroups.com>, > > JT <jonas.thornv...@gmail.com> wrote: > >Because i will present a finite sum of fractions to represent the > >edgelength to vertice line ratio? So you can all calculate exact, and > >not by using approximations? > > The sum of rationals (fractions) is itself a rational. > > You cannot express the edge length of all regular polygons as a > fraction of the radius. > >  Richard
Usomg double up of vertices it is a peace of a cake expressiing raios starting with 6 sided polygon (3)which really a multiple of 3. And the other polygons will be expressed realising that taking the prime sided polygon *3 will create a common vertex with the polygons built from multipels of 3.

