2. Finding the Area of Polygons

3. Vocabulary Perimeter – The sum of all sides of the shape. Area – The total occupied space of a shape in units squared.

4. Area of Triangles Base (b) Height (h)

5. We know how to find the area of a square or a rectangle

6. What if we cut the shapes in half?

7. Example = = 12 units squared

8. Try

9. One More

10. Notice all of our examples have been right triangles In other triangles, you must make sure you are using the height. Height is always perpendicular to the base

11. Find the Area 3 in 7 in 5 in

12. Find the Area 6 in 12 in 10 in

13. ….and these guys make millions…

14. Finding the Area of Other Polygons

15. We Know How to Find the Area of Several Figures Already

16. Finding the area of a rhombus and parallelogram They are just squares and rectangles pushed over Area = 4 un² Notice that we are not using the length of the angled side! 3

20. Trapezoid Formula for area

21. Trapezoids

24. Area of Other Polygons

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

26. Example

28. 4 4

29. 2 2 3

30. Closure: With a partner find the area 3 5 6 4