Introduction to Non-Euclidean Geometry (Dover Books on Mathematics)
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Introduction to Non-Euclidean Geometry (Dover Books on Mathematics)
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, and numerous exercises appear throughout the text. 1945 edition.