The first De Villiers point is collinear with points 174 and 481.

Please install Java (version 1.4 or later) to use JavaSketchpad applets.

De Villiers Collinearity 1

Go to the Encyclopedia of Triangle Centers for definitions of points 174 and 481.

Also see X1127 for the first De Villiers point and use this interactive C.a.R applet to construct these 2 related points and the line through them.


This page uses JavaSketchpad, a World-Wide-Web component of The Geometer's Sketchpad. Copyright © 1990-2008 by KCP Technologies, Inc. Licensed only for non-commercial use.

Michael de Villiers, 24 July 2010.