To use Pythagorean Theorem, you must have a triangle with 2 legs and 1 . The is the longest side of the triangle and is across from the degree angle. Pythagoras is credited with the theorem that states that the Response area of the squares of the 2 legs is equal to the longest side squared.

This can be written as:

a^2 + b^2 = c^2

Where:
- a and b are the lengths of the two legs of the triangle
- c is the length of the hypotenuse

You can use this theorem to find the missing side of a right triangle when you know the lengths of the other two sides. Just plug in the values for a and b, and solve for c.