Parallel lines, lines parallel to planes, and parallel planes. GDZ entries focus heavily on proving theorems and constructing cross-sections.
The for Geometry Didactic Materials (10th Grade) by B.G. Ziv is a widely used pedagogical resource in Russian-speaking schools designed to complement the standard geometry textbook by L.S. Atanasyan. Overview of the Resource gdz geometrija didakticheskie materialy 10klass ziv
Tests designed to evaluate knowledge at the end of a chapter. Parallel lines, lines parallel to planes, and parallel
Focused on verifying theoretical knowledge and definitions. Structure and Key Topics lines parallel to planes
Increased difficulty, often used in specialized math classes or for Olympiad preparation.