This project collects actual information on two sections of mathematics - algebra of logic and geometry of triangles, Olympiad problems.The relevance of this work is due to the increasing popularity of computer technology, where the algebra of logic is used, as well as relevant tasks from the USE and GIA related to triangles.The advantage of this work is the examples of lesson plans, which can be used in the preparation, methodological recommendations and test-measuring materials for the final tests.This material will be useful for teachers of mathematics in both specialised and general education classes.