1. Splash Screen

2. Over Chapter 10 5-Minute Check 1 A.9 B.36 C.50 D.54 WXYZ is a rectangle. If ZX = 6x – 4 and WY = 4x + 14, find ZX. Over 6.4

3. Over Chapter 10 5-Minute Check 2 A.2 B.3 C.4 D.5 WXYZ is a rectangle. If WY = 26 and WR = 3y + 4, find y. Over 6.4

4. Over Chapter 10 5-Minute Check 3 A.± 6 B.± 4 C.± 3 D.± 2 WXYZ is a rectangle. If m  WXY = 6a 2 – 6, find a. Over 6.4

5. Over Chapter 10 5-Minute Check 4 A.38 B.42 C.52 D.54 RSTU is a rectangle. Find m  VRS. Over 6.4

6. Over Chapter 10 5-Minute Check 5 A.142 B.104 C.76 D.52 RSTU is a rectangle. Find m  RVU. Over 6.4

7. Over Chapter 10 5-Minute Check 6 A.3 units B.6 units C.7 units D.10 units Given ABCD is a rectangle, what is the length of BC? ___ Over 6.4

8. CCSS Content Standards G.GPE.7 Use coordinates to compute perimeters of polygons and areas of triangles and rectangles, e.g., using the distance formula. Mathematical Practices 1 Make sense of problems and persevere in solving them. 7 Look for and make use of structure.

9. Then/Now You found areas of rectangles and squares. Find perimeters and areas of parallelograms. Find perimeters and areas of triangles.

10. Vocabulary parallelogram: - base: any side can be called the base - height: the perpendicular distance between the two parallel bases

11. Vocabulary triangle: - base: any side can be called the base - height: the length of an altitude drawn to a given base

12. Vocabulary Formula:Area of a Rectangle b h

13. Vocabulary Formula:Area of a Parallelogram

14. Vocabulary Formula:Area of a Triangle

15. Vocabulary Postulate 11.1: Area Addition Postulate The area of a region is the sum of the areas of its nonoverlapping parts. 1 2

16. Vocabulary Postulate 11.2: Area Congruence Postulate If two figures are congruent, then they have the same area.

17. Example 1 Perimeter and Area of a Parallelogram Find the perimeter and area of

18. Example 1 A. Find the perimeter and area of Perimeter and Area of a Parallelogram

19. Example 3 Perimeter and Area of a Triangle SANDBOX You need to buy enough boards to make the frame of the triangular sandbox shown and enough sand to fill it. If one board is 3 feet long and one bag of sand fills 9 square feet of the sandbox, how many boards and bags do you need to buy?

20. Example 4 Use Area to Find Missing Measures ALGEBRA The height of a triangle is 7 inches more than its base. The area of the triangle is 60 square inches. Find the base and height.

21. Example 4 ALGEBRA The height of a triangle is 12 inches more than its base. The area of the triangle is 560 square inches. Find the base and the height. Use Area to Find Missing Measures

22. End of the Lesson