2.1 Angle Measure in the Poincaré Half-plane.
I began to look at the court differently – as a mathematical equation, almost. The angles were everything.
 —Exit book to another website.John McEnroe (2002)

Select and drag to points to explore the angle measure.

Timothy Peil, 29 January 2013, Created with GeoGebra

2.1 Analytic ModelsBack to Analytic Models for Plane Geometry.
Ch. 2 Euclidean/NonEuclidean TOC  Table of Contents
Timothy Peil  Mathematics Dept.  MSU Moorhead
© Copyright 2013 - Timothy Peil