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

2. Agenda Review Definitions Properties of Parallelograms Class Work
Homework

3. Warm-Up True or False: Every Square is also a rectangle.
Every rectangle is also a square.
Every isosceles trapezoid is also a trapezoid.

4. Quadrilateral:
Polygon with 4 sides.

11. 6-2 Properties of Parallelograms
Defn: Parallelogram: both pair of opposite sides are

12. Properties of a
1. Opposite sides are

13. 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

14. 3. Opposite <‘s are

15. 4. Diagonals bisect each other

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

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

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

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

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

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

22. Homework
Worksheet