Fundamentals of Geometry by Oleg A. Belyaev
Publisher: Moscow State University 2007
Number of pages: 256
A continually updated free online book devoted to rigorous axiomatic exposition of the basic concepts of geometry. Self-contained comprehensive treatment with detailed proofs should make this book both accessible and useful to a wide audience of geometry lovers - from high school and college students to university teachers and other geometry professionals.
Mathematics Geometry & Topology