Berger M. Geometry I

Springer, 2009. - 446 pages.Volume I of this 2-volume textbook provides a lively and readable presentation of large parts of classical geometry. For each topic the author presents an esthetically pleasing and easily stated theorem - although the proof may be difficult and concealed. The mathematical text is illustrated with figures, open problems and references to modern literature, providing a unified reference to geometry in the full breadth of its subfields and ramifications.Berger M., Pansu P., Berry J.-P., Saint-Raymond X. Problems in Geometry