Homework Answers

8. Yes, pentagon

9. No, not formed by segments

10. Yes, 10-gon(Decagon)

11. 3

15.71°

16. 115°

17. 75°

18. 75

19. 20

20.44

21. 8, octagon

22. Answers Vary

23.MP, MQ, MR, MS, MT

24. 6, hexagon

25. 8, octagon

26. 5, pentagon

27. 17, 17-gon

If a quadrilateral is a parallelogram, then its opposite sides are congruent.

Example 1 Find Side Lengths of Parallelograms

FGHJ is a parallelogram. Find JH and FJ.

Checkpoint Find Side Lengths of Parallelograms

ABCD is a parallelogram.Find AB and AD.

1.

If a quadrilateral is a parallelogram, then its opposite angles are congruent.

If a quadrilateral is a parallelogram, then its consecutive angles are supplementary.

Example 2 Find Angle Measures of Parallelograms

PQRS is a parallelogram. Findthe missing angle measures.

Follow-Up

Checkpoint Find Angle Measures of Parallelograms

ABCD is a parallelogram. Find the missing angle measures.

2.

3.

If a quadrilateral is a parallelogram, then its diagonals bisect each other.

Example 3 Find Segment Lengths

TUVW is a parallelogram.Find TX.