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# PYTHAGOREAN THEOREM AND DISTANCE FORMULA

**PRACTICE WITH DISTANCE ON A GRID
Find the distance from point A to point B.**

**DISTANCE IN A COORDINATE PLANE**

**PRACTICE WITH DISTANCES
IN A COORDINATE PLANE**

Use the distance formula to find the distance between the points given.

1. A to B

2. C to D

3. E to F

4. G to H

5. (0, 3) to (-7, 4)

6. (-12, 4) to (3, -10)

**CIRCLES IN THE PLANE**

**PRACTICE WITH CIRCLES
**Find the equation of the circle.

1. Center at the origin, radius = 7 units

2. Center at the origin, radius = 1 unit

3. Center at the origin, radius = 15 units

4. (BONUS!) Center at (1,2), radius = 3 units

5. (BONUS!) Center at (-2,7), radius = 5 units

**CLASSROOM CONNECTION
**

Identify three Standards at your grade level that focus on prior knowledge

necessary to understand the equation of a circle.

Identify a lesson in your textbook that addresses one of these Standards.

Discuss strengths of the lesson and modifications you might make (if any)

to increase understanding for all learners.

**THE RECTANGLE PARADOX
**

Cut up a 5 x 21 rectangle as shown in the picture. Put the pieces back

together as shown in the second picture to make an 8 x 13 rectangle.

Some area has been lost. Explain how.