On Mon, 8 Nov 2010, Bruno Wolff III wrote:
Just remember that depends on Euclidean Geometry. In other geometries
(say
very large circles on the surface of the earth) the ratio is different.
There aren't terribly many useful non-Euclidean
geometries for which there is a "the ratio".
Spherical geometry is not one of them.
--
Michael hennebry(a)web.cs.ndsu.NoDak.edu
"Pessimist: The glass is half empty.
Optimist: The glass is half full.
Engineer: The glass is twice as big as it needs to be."