Simon pulled out his old Magformers Pythagoras set and this time around, he really nailed all the tasks independently. The set offers a variety of puzzles to “prove” the Pythagorean theorem and apply it to other shapes (even 3D!), as well as teaches several more tricks (such as the ratios between the areas of similar triangles or the areas of parallelograms).

Chinese square Proof:

Area of Parallelograms:

Applying Pythagorean theorem to other shapes:

Extended theorem by the Greek mathematician Pappus:

Areas of Similar Triangles:

More of Pythagorean theorem with various shapes:

Puzzles: