1. Distance Formula: EQ: What is the distance formula?

2. Distance Formula:

3. Find the distance between… 1)M(-2,1) and N(-5,4) 2)G(9,-4) and F (6,-9) 3) Find the perimeter of a triangle with points R(3,4), S(-8,1) and T(1,-2).

4. A large building is on fire. Fire trucks from two different stations respond to the fire. One station is 1 mi east and 2 mi north of the fire. The other station is 2 mi west and 1 mi south of the fire. How far apart are the two fire stations?

5. Alternative to Distance Formula: Pythagorean Theorem: a 2 + b 2 = c 2

6. Examples: 1) Find x. When needed leave as a simplified radical. 2) Find x. When needed leave as a simplified radical.

8. Use the Pythagorean theorem to find the distance between the following: A (3,4) B (-1,2)C (-3,2) D(4,-1)