A different perspective on teaching Geometry at high school: The Greek case study

Geometry is essentially a global language, which is fully understood in different times, countries and cultures. The proof of a geometric theorem (e.g. the Pythagorean Theorem) or a geometric construction (e.g. the construction of an equilateral triangle with straightedge and compass) is recognized in more or less the same way by everyone. This fact, in combination with other parameters, brings out a human face for geometric and mathematical achievements in general, thus allowing people and civilizations to come together.