Rybkin's Collection of Problems in Geometry, Part I — Planimetry cover
Available Now

Rybkin's Collection of Problems in Geometry, Part I — Planimetry

by N. A. Rybkin

Translated by Valery Manokhin, PhD

The companion problem collection to Kiselev's classical Russian geometry — now in English for the first time. Rybkin's Planimetry Problems is the set Russian students worked through alongside Kiselev's geometry textbook for over a century. Kiselev gives the definitions, theorems, and proofs; Rybkin gives the problems that turn those proofs into geometric intuition. 970 problems across 16 sections, organised chapter-by-chapter to mirror Kiselev's Planimetry — from preliminary concepts and lines through triangles, quadrilaterals, similar figures, the circle, regular polygons, and the measurement of areas. Worked solutions for the harder problems, hints for the rest.

📚 Ages 12–16 · Grades 6–9 📝 16 sections ✏️ 970 exercises

🇺🇸 Grades 6–9 (geometry problem-solving companion)

🇬🇧 KS3–GCSE Higher (Years 7–11)

🇨🇦 Grades 6–9

Adults and self-learners welcome — great mathematics has no age limit.

Published by Northern Star Academic Press · First faithful English translation from the original Russian edition

Get Notified When New Translations Launch

New translations are announced to the newsletter first — with sample chapters. Join math educators and parents who follow this project.

New translation announcements, sample chapters, and teaching notes. No spam.

Also by Valery Manokhin — Machine Learning & Forecasting books at

valeriy.ai · Substack Newsletter