**In this module, you can study ****the formula and concept of the Pythagorean Theorem; ****how to use the Pythagorean Theorem to figure out the length of any side of a right triangle.**

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The Pythagorean Theorem only works with right triangles, but you can use it in many different ways.

For example, builders use the Pythagorean Theorem when laying a house foundation to ensure it's square.

The Pythagorean Theorem is: **a ^{2} + b^{2} = c**

It means **(side) ^{2} + (side)^{2} = (hypotenuse)^{2}**

**Hypotenuse** is the the longest side

The letters * a*,

**Study and practice**

- Study the Pythagorean TheoremMath.com have put together a full online lesson for the Pythagorean Theorem. You'll learn a little about the history of the theorem, see some worked examples and practice a few of your own.
- Download a Pythagorean Theorem WorksheetCreate and print your own downloadable worksheet at math-aids.com. If you tick the box at the bottom of the page, your worksheet will contain worked-out answers.
- Quiz yourself on the Pythagorean TheoremTake a practice quiz at onlinemathlearning.com. HINT: The quiz asks you to calculate values for side a, b or c. C is always the hypotenuse in this quiz (the longest side), so be sure the set your formula up correctly.

The video explains how to use exponents on a Casio fx-991 scientific calculator. (The 'E' part of BEDMAS.)

- Online scientific calculator from Calculator.netTo open the scientific calculator in a new window, you MUST click the link.