Section 5.5: Irrational Numbers

5.5 Outline

1. Pythagorean theorem
   1. perfect squares
   2. square numbers
   3. legs/hypotenuse (There is a nice little graphic showing the meaning of the Pythagorean theorem below)
2. Square roots
   1. definition
   2. positive square root of n
   3. irrational numbers
   4. the number pi
3. Operations with square roots
   1. simplified square root definition
   2. laws of square roots
      1. square root of zero
      2. square root of a square
      3. multiplication of square roots
      4. division of square roots

5.5 Essential Ideas