Pythagorean Theorem Proof, Area Method, Geometry, Mathematics, Brain Teasers That Have Fun

. The area of ​​the large square with sides a + b that we want to talk about must be equal to the sum of the areas of the 4 triangles and the areas of the small square with side c. So the area of ​​the big square is - area of ​​4 triangles + c2. Here is the proof