This textbook, published by the International Correspondence Schools, is a comprehensive guide to the principles of geometry and trigonometry. It covers a wide range of topics, from the basics of points, lines, and angles to more advanced concepts like conic sections and spherical trigonometry. With clear explanations, helpful diagrams, and numerous practice problems, Geometry and Trigonometry is an invaluable resource for students and anyone interested in these fundamental mathematical concepts.

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