Introduction to Non-Euclidean Geometry

One of the first college-level texts for elementary courses in non-Euclidean geometry, this volume is geared toward students familiar with calculus. Topics include the fifth postulate, hyperbolic plane geometry and trigonometry, and elliptic plane geometry and trigonometry. Extensive appendixes offer background information on Euclidean geometry, and numerous exercises appear throughout the text. Reprint of the Holt, Rinehart & Winston, Inc., New York, 1945 edition.