
Re: How to prove that angle in a Circle is 2 Pi Rads ?
Posted:
Jun 4, 2009 4:38 PM


In article <659af571e4444af9adfda0efd8be622b@f10g2000vbf.googlegroups.com>, calvin <crice5@windstream.net> wrote:
> .... > I've often wondered how the ancients were able to > find the value of pi so precisely as to know that > it is not rational....
AFAIK they didn't. The irrationals in Euclid Book X are all algebraic numbers built up from square roots.
Ken Pledger.

