Plane Geometry

*Plane Geometry* by G. A. Wentworth and David Eugene Smith is a structured and rigorous textbook designed to introduce students to the fundamental principles of Euclidean geometry. Covering essential topics such as points, lines, angles, triangles, polygons, circles, and geometric proofs, the book emphasizes logical reasoning and step-by-step problem solving. Each theorem and construction is carefully presented with clear explanations, diagrams, and exercises to reinforce understanding. This classic work blends mathematical precision with pedagogical clarity, making it ideal for high school students and educators aiming to build a strong foundation in geometric thinking and deductive reasoning.