1. Bell Ringer:
What do you know about quadrilaterals and parallelograms?

2. 9.1 & 9.2 Properties of Parallelograms
Essential Question: What can you conclude about the sides, angles, and diagonals of a parallelogram?

3. Quadrilateral- a polygon with four sides
Parallelogram- a quadrilateral; opposite sides are parallel; opposite sides are congruent; opposite angles are congruent; consecutive angles are supplementary; diagonals bisect each other

5. ABCD is a parallelogram. Find each measure.
1. AD
2. m<B

6. PQRS is a parallelogram. Find each measure.
2. PR

7. Show that each quadrilateral is a parallelogram for the given values of the variables.
1. x=7
2. y=4

8. 1. z=11
2. w=4.5

9. 1. a=2.4
2. b=9

10. 1. x=6
2. y=3.5

11. Tear out pages
; 17-21

12. p Sometimes 18. Always 19. Always 20. Never 21. Never
p Show work 6. Show work 7. No 8. Yes 9. Yes 10. No 11. Yes 12. No