The 13th International Olympiad of Geometry was held

The 13th International Geometry Olympiad (IGO) was held in Iran and hundreds of cities around the world with the participation of more than 50 countries and the competition of thousands of students.

The 13th International Geometry Olympiad (IGO) was held in Iran and hundreds of cities around the world with the participation of more than 50 countries and the competition of thousands of students.