"This book explores the application of a broad range of mathematical techniques to the solution of Euclidean problems"--

A fascinating collection of geometric proofs and properties.

The audience for this book includes just about anyone who has any curiosity at all about how mathematics helps in explaining the world."--Paul J. Nahin, author of An Imaginary Tale "I learned a lot from this book.

An exploration of the mathematics of twenty geometric diagrams that play a crucial role in visualizing mathematical proofs.

This lavishly illustrated book provides an unusually accessible approach to geometry by placing it in historical context.

Topics include Euclidean group; inversion; quadratics; finite inversive groups; parabolic, hyperbolic, and elliptic geometries; differential geometry; and more. 1933 edition.

This text is for a one-semester undergraduate course on geometry. It is richly illustrated and contains hundreds of exercises.