Hi ! http://img204.imageshack.us/img204/1228/sanstitrehc.png
Ops menth CDB
That's false. is actually equilateral, thus On the other hand we have that is also equilateral, then hence
Finally which implies that and are collinear.
Originally Posted by Henryt999 Note that Ced is a right angle... No, that angle = 60 degrees