Have you heard of the bride theorem? And about the rope rule? It turns out we all know exactly what it’s about. About the jewel of geometry, Pythagoras’ theorem, of course!
On Wednesday, December 16, we remembered it for a reason. After all, Pythagoras’ Theorem Day is celebrated only when the sum of the squares of the date and month equals the square of the year. It is surprising that the date 16.12.20 is just such a day.
Pythagoras’ theorem is one of the fundamental theorems of Euclidean geometry. Who doesn’t remember the little poem that helped many people remember the essence of the theorem: “Pythagoras’ pants are equal in all directions.” It has been proved many times by mathematicians from different countries: through similar triangles, by the method of areas, and even through differential equations.
Here we also decided to get acquainted with Pythagoras’ theorem more closely, to look at different proofs, to study pentagonal and triangular numbers, Pythagorean triples, and the Egyptian triangle. In a word, we felt ourselves real Pythagoreans.
Pythagorean Theorem Day is not a frequent holiday. The next one will take place only in 2026. But the more valuable this holiday is for those who really love mathematics!