Proof Of Pythagorean Theorem Worksheet. How to proof the Pythagorean Theorem using Similar Triangles? In mathematics, the Pythagorean theorem, also known as Pythagoras's theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle.
The Pythagorean Theorem says that for right triangles, the sum of the squares of the leg measurements is equal to the hypotenuse measurement squared.
The formula and proof of this theorem are explained here with examples.
This proof is based on the fact that the ratio of any two corresponding sides of similar triangles is the same regardless of the size of the triangles. It states that the area of the square whose side is the hypotenuse (the side opposite the right angle) is equal to the sum of the areas of the squares on the other two sides. Following is how the Pythagorean equation is written: a²+b²=c².