This is the most standard curriculum. Solutions are usually found for the " Рабочая тетрадь " (Workbook) by L.S. Atanasyan.
(e.g., Atanasyan, Merzlyak, or Pogorelov) gdz k tetradi po geometrii klass
Offers step-by-step scans of completed workbook pages for almost all Russian textbook authors. This is the most standard curriculum
Another popular series by A.G. Merzlyak, V.B. Polonsky, and M.S. Yakir. gdz k tetradi po geometrii klass
Provides answers for various workbook editions, including newer GEF (ФГОС) versions.
Because your request didn't specify a grade level or author, here are the most common workbooks and where to find their solutions:
Specifically the " Рабочая тетрадь " designed to accompany the Atanasyan textbook. Popular Resources for These Answers: