Date: Oct 28, 2008 11:12 AM
Author: Kaisdelvar
Subject: Pentagram geometry

Does anybody have any idea what to do to prove that FG is concurrent to DE?

[img]http://img241.imageshack.us/img241/9613/pentagramvy2.png[/img]

The only stuff we know from the task is:
AD=AE
4 * DB * EC = DE^2