2. A quadrilateral is a four-sided plane.

3. A parallelogram is a four-sided plane that meets the following criteria:  Opposite sides are parallel  Opposite sides are congruent  Opposite angles are congruent  Consecutive angles are supplementary  Diagonals bisect each other

4.  Squares  Rectangles  Rhombuses

5.  Theorem 6.21:  The area of a parallelogram is the product of base and its corresponding height. 4 8 A=(8)(4) > > >>

6.  Kites  Trapezoids

7.  Postulate 22:  The area of a square is the square of the length of one of its sides.  Theorem 6.20:  The area of a rectangle is the product of its base and height. 4 4 A=4 2 4 8 A=(4)(8)

8.  Trapezoid:  Area=1/2(Height)(Base 1 +Base 2 )  Rhombus and Kite:  1/2(Diagonal 1 xDiagonal 2 ) 4 2 A=(1/2)(3)(2+4) 3 2 4 A=(1/2)(2x4)

9.  Area of a Square… Area of a SQUARE=SideSQUARED  Area of a Kite… Please DaD: (1/2)Product of DandD--(1/2)DaD

10. Examples-Square The length of one of the sides is 3. What is the area of the square? 9 units 2

11. Examples-Rectangle The length of one of the sides is 4, and the other is 6. What is the area of the rectangle? 24 units 2

12. Examples-Kite The length of one of the diagonals is 5, and the other is 8. What is the area of the kite? 20 units 2

13. Examples-Rectangle The height of the building is 350 feet and the width is 20 feet. What is the area of the building? 7,000 feet 2

14. Examples-Rhombus The length of one of the diagonals is 16, and the other is 8. What is the area of the rhombus? 64 units 2

15. Examples-Trapezoid The length of one of the bases is 2, and the other is 4. The height is 8. What is the area of the trapezoid? 24 units 2

16.  We hope you enjoyed our project… …and learned from it!!!