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The textbook is compiled in accordance with the mathematics curriculum (geometry, profile level) for the 11th grade of secondary schools. The content of the textbook contributes to the further development of students' mathematical culture, comprehensive mastery of the educational material, and the formation of key and subject competences. The multilevel nature of the presentation of the educational material allows to take into account the abilities and inclinations of students and to really build their individual educational trajectories in the study of geometry in grade 11. The textbook contains the justification of all the basic facts of the geometry course, algorithms for solving the main types of mathematical problems of the course, tasks for self-checking, examples of practical application of mathematics, generalisation and systematisation of material on each topic.

Designed for students of the 11th grade of general secondary education institutions and mathematics teachers.