## 5.5 Outline

- Pythagorean theorem
- perfect squares
- square numbers
- legs/hypotenuse
*(There is a nice little graphic showing the meaning of the Pythagorean theorem below)*

- Square roots
- definition
- positive square root of n
- irrational numbers
- the number pi

- Operations with square roots
- simplified square root definition
- laws of square roots
- square root of zero
- square root of a square
- multiplication of square roots
- division of square roots