1. Unit 7: Quadrilaterials
6-1, 6-2 Classifying Quads, Properties of parallelograms

2. Agenda Review Definitions Properties of Parallelograms Class Work
Homework

3. Quadrilateral:
Polygon with 4 sides.

10. 6-2 Properties of Parallelograms
Defn: Parallelogram: both pair of opposite sides are

11. Properties of a
1. Opposite sides are

12. Same side interior angles
2. Consecutive <‘s are supplementary a+b = 180 b+d=180 a+c=180 c+d=180
Same side interior angles

13. 3. Opposite <‘s are

14. 4. Diagonals bisect each other

15. Ex: ABCD is a Parallelogram.
What do we know about this figure?

16. 1. AB = 5x+3, DC=4x+15. Find x

17. Ex 2: m<ADC = 68
Find m<DCB Find m<CBA Find m<BAD

18. Ex.3: AE=2x+5, EC=4x-9, Find AC

19. Ex. 4: DB=8x-4, EB=2x, Find DE

20. Ex. 5: m<AEB=108, Find m<BEC

21. Homework
Worksheet