: Congruence, similarity, the Pythagorean theorem, and triangle inequalities.
: Problems are organized by topic (e.g., "Properties of Triangles," "Circles and Tangents"), allowing students to focus on specific weaknesses. Three Levels of Difficulty : Standard : Basic skill-building tasks. Advanced : In-depth geometry for specialized schools. gdz gordin planimetriia
: Tangents, inscribed and circumscribed circles, and arc-angle relationships. the Pythagorean theorem
The book follows the standard Russian 7th–9th grade curriculum, including: "Properties of Triangles