Paul Yiu's Introduction to the Geometry of the Triangle
Jean-Louis Ayme's Geometry * Géométrie * Geometria
Bernard Gibert's Cubics in the Triangle Plane
Quim Castellsaguer's The Triangles Web
Triangle Geometry at MathWorld
Homepage Floor van Lamoen
Triangle Centers with C.a.R.
Grinberg at MathWorld
Moses at MathWorld
Index of Biographies of Mathematicians
The Geometer's Sketchpad
Journal for Geometry and Graphics
American Mathematical Monthly
I just created a mailing list devoted to Triangle Geometry.
The name of the list is Hyacinthos
(in honor of Emile Michel Hyacinthe Lemoine).
By 7 March 2013, the number of messages had passed 21,600.
FORMERLY, subscriptions were available at HYACINTHOS. Messages have been preserved and made accessible by CÚsar Lozada. Many of these have been given new links in ETC, and others can be accessed by knowing the message number and following this example:
Simply replace 25017 by the message number that is shown in ETC. The same procedure works for ADGEOM messages, starting with