M. : Clean Ponds, 2006. — 32 s. — (The September 1st Library, Mathematics Series.) Issue. 5). Recently, interest in combinatorics in the school course of mathematics has increased markedly. Elements of combinatorics, statistics and probability theory are included in the new standards in mathematics for basic and specialized schools. The formation of combinatorial ideas and the development of combinatorial thinking of schoolchildren is among the main goals of teaching mathematics. However, usually, when talking about the elements of combinatorics, we mean problems of algebraic content .. Here we will consider combinatorial problems in geometry, the solution of which can be dealt with from the seventh to the eleventh grade. Points and straight lines on the plane. Circumferences. Polygons. Tasks to cut. Counts. Euler's theorem for polygons. Coloring cards. Straight and flat in space. Multifaceted . Euler's theorem for polyhedra. Answers and Solutions .