You can access structured lessons, tests, and homework solutions on these platforms:

: Provides detailed step-by-step explanations for the Atanasyan textbook, accompanied by methodological comments.

Most 9th-grade geometry curricula in Russia follow one of these primary textbooks:

: A massive database of answers for multiple textbook authors and specialized workbooks.

: The primary resource for practicing specific OGE-style exam questions with provided solutions.

: Relationships between sides and angles in triangles, sine/cosine theorems, and circle properties.

: Operations with vectors, the method of coordinates, and equations for figures like circles.