An introduction to hyperbolic geometry. It includes an interactive Java applet for creating straightedge and compass constructions in the Poincare model. The Hyperbolic Geometry Exhibit . An introduction to hyperbolic geometry at the Geometry Center. Neutral and Non-Euclidean Geometries .
Lecture notes on hyperbolic geometry.
It runs to about 145 printed pages, and explores the topic with mathematical rigor. Mark Phillips and Charlie Gunn. A paper giving the 4x4 matrices for performing reflections, translations, and rotations in the Klein model. A starting point for graph drawing. It includes a bibliography and links to research groups, tools, conferences, and selected papers.