The book Sacred Mathematics: Japanese Temple Geometry by Fukagawa Hidetoshi and Tony Rothman is the primary source of stories and questions we are going to discuss.
The notes (hand-written notes in Russian) will appear here:
Resources:
Hiroshi Kotera collected several hundreds of images of sangaku tables - out of about 820 that survived (click on hieroglyphs to see the pictures!). The English version of the page contains the map of prefectures in Japan.
Geometry Textbook:
- Geometry textbook by O. V. Pogorelov: in Ukrainian and in Russian.