Selected Problems and Theorems of Elementary Mathematics . Geometry. Stereometry by authors D. About. Shklyarsky, N. N. Chentsova and I. M. Jagloma is a unique tool that will become an indispensable assistant for all who seek to deepen their knowledge in the field of mathematics, especially in geometry and stereometry. This edition not only offers readers an extensive selection of problems, but also immerses them in the world of theorems and proofs that form the basis of elementary mathematics. The book covers a wide range of topics, ranging from simple geometric figures to complex three-dimensional objects. The authors carefully selected tasks that will help readers not only to consolidate theoretical knowledge, but also to develop logical thinking and analytical abilities. Each task is accompanied by a detailed analysis, which makes the material accessible to understanding even for those who are just starting their way in mathematics. This book will be especially useful for students and schoolchildren preparing for exams, as well as teachers who are looking for quality materials for their lessons. It is suitable both for self-study and for use in the educational process. If you are interested in mathematics, love to solve problems and want to develop your skills, this publication will be a real find for you. The topics raised in the book are not limited to geometry and stereometry. The authors touch on important aspects of mathematical thinking, showing how theorems and problems can be related to real life. They emphasize that mathematics is not only a set of formulas, but also a way of analyzing the surrounding world. The reader will be able to see how geometric principles are applied in architecture, art, and even in nature, making the study of mathematics more fascinating and meaningful. The style of the authors is clear and accessible. D. About. Shklyarsky, N. N. Chentsov and I. M. Yaglom are well-known mathematicians and teachers whose work has already won recognition in the educational environment. Their approach to the presentation of material is based on a deep understanding of the subject and the ability to convey complex ideas in a simple and understandable language. This makes their books not only useful, but also interesting to read. If you are looking for books similar in genre, pay attention to the works of authors such as A. I. Hinchin or W. F. Sukhov . Their works are also devoted to elementary mathematics and can complement your library. Search queries that can lead you to this book include "geometry problems", "elementary mathematics theorems", "mathematical problems for exam preparation", and "stereometry tutorials". In conclusion, "Selected Problems and Theorems of Elementary Mathematics. Geometry. Stereometry is not just a textbook, but a whole world of mathematical discoveries waiting for its reader. This book will be a reliable companion on the way to understanding and mastering elementary mathematics, and will also inspire you to further research in this fascinating field. Do not miss the opportunity to take a step towards new knowledge and discover the beauty of mathematics!