1. What is perimeter?

2. In-Class Practice 12 in 7 in 7+12+7+12= 38 in

3. a2a2 4242 In-Class Practice 8 in 4 in x +b 2 =c 2 +x 2 =8 2 4 3 in 8+4+4 3= (12 + 4 3 ) in

4. What is area? s A = s 2 Area of a Square: s

5. Area Addition s Area = s s s s 2 + s 2

6. Area Addition In-Class Practice 1 in 1 in 2 +1 in 2 = 9 in 2

7. 64 ft 2 Area Addition In-Class Practice (or Subtraction) 8 ft 6 ft = 28 ft 2 -(6 ft) 2 -36 ft 2 (8 ft) 2

8. Area Addition …and the area of a rectangle h b b (1 unit 2 ) …

9. Area Addition …and the area of a rectangle b b b b b b … b (1 unit 2 ) + ++++ h =bh units 2 h b