Inscribed angles

The seventeenth book of the series "School Mathematical Mugs" is devoted to geometric tasks and designs related to inscribed angles. The book is intended for classes with schoolchildren of grades 7-11. It includes the development of ten classes of a mathematical circle with detailed examples of various complexity, tasks for independent solution and methodological instructions for the teacher. The application contains a large list of additional tasks of various levels of difficulty. A separate part of this section is devoted to the concept of anti -parallelism. For ease of use, the final part of the book is made in the form of handouts.
The book is addressed to school teachers of mathematics and leaders of mathematical circles. We hope that it will be interesting to schoolchildren and their parents, students of pedagogical universities, as well as all lovers of elementary geometry.
The second edition, corrected