Encyclopedia of Elementary Mathematics . Geometry. T. 5" is an outstanding work created by a team of authors, which included such famous mathematicians as A. D. Alexander, B. M. Markusevich and A. I. Hinchin . This book is the fifth part of an extensive encyclopedia that covers key aspects of elementary mathematics, and in particular geometry. It not only serves as a textbook for students and schoolchildren, but also represents a real treasure trove of knowledge for all who are interested in mathematics and its applications in various fields. The book immerses the reader in the world of geometry, starting with the basics and ending with more complex concepts. Here you will find detailed explanations of such concepts as flat and three-dimensional figures, properties of angles, theorems and axioms, as well as their practical application. The authors emphasize an intuitive understanding of the material, which allows readers not only to memorize the formulas, but also to comprehend their essence. Each section of the book is illustrated with examples and problems, which makes the study of geometry more fascinating and accessible. This book will be of interest to both students and teachers, as well as anyone who wants to deepen their knowledge in the field of mathematics. It is suitable for high school students, students of technical and pedagogical universities, as well as for mathematics lovers who seek to expand their horizons. If you are interested in topics such as mathematical logic, set theory, or even the philosophy of mathematics, then the Encyclopedia of Elementary Mathematics Geometry. T. 5" will be an indispensable source of information for you. The topics raised in the book concern not only purely mathematical aspects, but also their philosophical and practical applications. The authors discuss how geometry shapes our perception of space and time, how it is used in architecture, art, and even in the natural sciences. This makes the book not only a textbook, but also a fascinating reading for those interested in how mathematics affects our lives and the world around us. The style of the authors is distinguished by clarity and accessibility, which allows even complex concepts to be understandable to a wide audience. Alexandrov, Markusevich and Khinchin are known for their scientific works and textbooks, which have long established themselves as authoritative sources in the field of mathematics. Their approach to explaining material based on logic and sequence makes the study of geometry not only useful, but also fascinating. If you are looking for books that will help you better understand mathematics, pay attention to the Encyclopedia of Elementary Mathematics. Geometry. T. 5. It will be a great addition to your library, and will also help you prepare for exams or simply expand your knowledge. Do not miss the opportunity to immerse yourself in the world of geometry and discover the amazing aspects of this science that can change your perception of the world around you. Thus, this book is not just a textbook, but a whole world in which mathematics becomes accessible and fascinating. Allow yourself to open new horizons with the Encyclopedia of Elementary Mathematics. Geometry. T. 5" and enjoy a journey into the world of numbers and shapes!