Math Forum http://mathforum.org/kb List of forum topics en Re: Triangles, parallels, Euclid and Riemann http://mathforum.org/kb/thread.jspa?messageID=8214385&tstart=0#8214385 Feb 1, 2013 5:04:34 AM Feb 1, 2013 5:04:34 AM lbiarge 0 Triangles, parallels, Euclid and Riemann http://mathforum.org/kb/thread.jspa?messageID=8214218&tstart=0#8214218 Feb 1, 2013 4:44:05 AM Feb 1, 2013 4:44:05 AM lbiarge 1