1. Exploring the Effect of Changing Dimensions on Area & Perimeter
Graph the quadrilateral with vertices at A(-3, 2), B(1, 2), C(1, -1) and D(-3, -1).
Area = _____________
Perimeter = _________

2. Transformation #1 (x, y)  (3x, y)
Apply the transformation to ABCD and find the new area and perimeter:
Area = _____________
Perimeter = _________ A B D C

3. Transformation #2 (x, y)  (x, 3y)
Apply the transformation to ABCD and find the new area and perimeter:
Area = _____________
Perimeter = _________ A B D C

4. Transformation #3 (x, y)  (3x, 3y)
Apply the transformation to ABCD and find the new area and perimeter:
Area = _____________
Perimeter = _________ A B D C

5. How did the perimeter & area change?
When just one dimension changes by factor of 3:
Perimeter: __________________________
(New Area) = (Original area) x (____)
When both dimensions change by factor of 3:
(New Perimeter) = (Original perimeter) x (____)

6. In your groups, work your way through 20.1
Try these problems
pg. 1038:
Example 1 A (read) and B (do)
pg. 1039:
Your turn #5 ( )
Example 2 A (read) and B (do)
Reflect #6

7. p. 1038

8. p. 1039

9. p. 1039

10. p. 1039