The search for the 9th-grade geometry workbook (рабочая тетрадь) by (А.В. Фарков) shows that it is primarily designed to accompany the standard geometry textbook by Atanasyan and others. Available Resources for A.V. Farkov (Geometry, Grade 9)
: Length of a circle and area of a disk. rabochaia tetrad po geometrii 9 klass farkov skachat
: Equation of a circle and equation of a line. rabochaia tetrad po geometrii 9 klass farkov skachat
: A popular companion to the workbook, titled "Testy po geometrii. 9kl. k uchebn. Atanasyana" (96 pages), is available for online viewing or download on platforms like Scribd . rabochaia tetrad po geometrii 9 klass farkov skachat