Ebook: Euclidean Plane and Its Relatives꞉ A Minimalist Introduction

"This book is meant to be rigorous, conservative, elementary, and mini- malist. At the same time, it includes about the maximum that students can absorb in one semester. Approximately one-third of the material used to be covered in high school, but not anymore. The present book is based on the courses given by the author at the Pennsylvania State University as an introduction to the foundations of geometry. The lectures were oriented to sophomore and senior university students."