2. Area and Perimeter of Composite Shapes

3. Sometimes Things Are Not Perfect or We are Missing Vital Information Divide the shape into shapes we can use

4. Example

6. 4 4

7. 2 2 3

8. With a partner find the area 3 5 6 4

9. Ouch

10. 6 4 2 3 10

11. I can find the area by breaking apart the shape two different ways 6 4 2 3 10

12. I can find the area by breaking apart the shape two different ways 6 4 2 3 10 Area = 6 un² Area = 40 un² Total area of the shape is the area of the two combined: 46 units squared

13. When I do it this way, I am missing a value. But I can find it……. 6 4 2 3 10

14. Let’s Do Another One Together 3 4 3 8 3 2 Find the perimeter and the area: Notice that we are missing some side lengths Perimeter = Area =

15. Find the area and perimeter Perimeter = Area =

16. A little harder? 7 4 4 3 5 5 Perimeter = Area =

17. Another 5 7 3 87 7 8 Perimeter = Area =

18. One More Together 4 12 5 22 13 Perimeter = Area =

19. On Your Own? 6 4 9 9 8 Perimeter = Area =

20. Closure: With a partner find the perimeter and area Perimeter = Area = 3 2 4 5 5 5 1 6 6 6 6