"Elementary Geometry" by A.P. Kiselev is more than just a textbook—it's a true treasure for anyone eager to deepen their understanding of geometric shapes and patterns. This book serves as an invaluable guide for students, schoolchildren, and anyone interested in mathematics who wants to sharpen their analytical skills. In *Elementary Geometry*, Kiselev takes readers on an engaging journey through the fundamentals of geometry. He explores essential topics such as properties of figures, theorems about triangles, circles, and polyhedra, and examines the connections between various geometric objects. Each chapter is crafted with clarity and logical flow, making it easy for readers not only to grasp the material but also to appreciate the beauty of geometry in everyday life. Kiselev masterfully combines theoretical explanations with practical problems, transforming the study of geometry into an exciting and rewarding experience. The book is especially useful for high school students preparing for exams and for college students studying mathematics at a deeper level. Mathematics teachers will also find a wealth of useful ideas for lessons and assignments. Kiselev writes with respect and understanding for his readers, making his style accessible and easy to follow—even for those without advanced mathematical background. The topics covered go beyond mere formulas and theorems; the author emphasizes logical thinking, develops spatial perception, and teaches how to apply geometric knowledge in real-world situations. Readers will discover how geometry influences architecture, art, nature, and technology. This book not only educates but also inspires, encouraging readers to seek geometric solutions in the world around them. Kiselev’s clear and concise style, combined with relatable real-life examples, makes complex concepts approachable and engaging. He is also known for other acclaimed works like *Algebra* and *Mathematics for Everyone*, which are praised for their accessibility and practical focus. His teaching approach is rooted in the belief that anyone can master even the most challenging topics if they are presented in an understandable and interesting way. *Elementary Geometry* is more than just a book—it's an immersive world that invites readers to explore and discover the fascinating aspects of mathematics. Whether you're looking to learn, grow, or simply see the beauty of geometry, this book is the perfect companion. If you want to not only understand geometry but also develop your logical thinking, A.P. Kiselev’s *Elementary Geometry* is exactly what you need. Don’t miss the chance to explore the world of geometry with this remarkable work, which will become your trusted guide in mastering mathematics and stepping confidently into a future full of knowledge and discovery.