1. How do you know that: Segment addition postulate 2 3 4 5 1 67 8 j k D C B A Segment AB + segment BC = segment AC?

2. How do you know that: Def linear pair 2 3 4 5 1 67 8 j k D C B A Angle 1 + angle 8 = 180

3. Write as a biconditional: A polygon is an octagon iff it has 8 sides. An octagon is a polygon with 8 sides.

4. How do you know that: Def linear pair 2 3 4 5 1 67 8 j k D C B A Angle 5 is supp to angle 6

5. How do you know that: given 2 3 4 5 1 67 8 j k D C B A Line j is // to line k?

6. D OR I Segment DI Segment OR is congruent to __________.

7. How do you know that: Vertical angle thm 2 3 4 5 1 67 8 j k D C B A Angle 7 is congruent to angle 1

8. List all pairs of: 1 & 4, 8 & 5 2 3 4 5 1 67 8 j k D C B A SSE angles

9. How do you know that: Vertical angle thm 2 3 4 5 1 67 8 j k D C B A Angle 4 is congruent to angle 6

10. Give another name for: Segment BA 2 3 4 5 1 67 8 j k D C B A Segment AB

11. Give another name for: Ray AC 2 3 4 5 1 67 8 j k D C B A Ray AB

12. How do you know that: // lines  Alt Ext angles are congruent 2 3 4 5 1 67 8 j k D C B A Angle 8 is congruent to angle 4

13. D OR I Is supplementary to Angle D ____________ angle O.

14. Give another name for: Angle 8, angle DCB, angle ACD, and angle BCD 2 3 4 5 1 67 8 j k D C B A Angle DCA

15. Write as a biconditional: 2 angles are congruent iff they have the same measure. Congruent angles have the same measure.

16. List all pairs of: 1 & 32 & 45 & 78 & 6 2 3 4 5 1 67 8 j k D C B A Corresponding angles

17. How do you know that: // lines  Corresponding angles are congruent 2 3 4 5 1 67 8 j k D C B A Angle 8 is congruent to angle 6

18. List all pairs of: 7 & 36 & 2 2 3 4 5 1 67 8 j k D C B A Alt int angles

19. How do you know that: Vertical angle thm 2 3 4 5 1 67 8 j k D C B A Angle 8 is congruent to angle 2?

20. Write as a biconditional: 2 angles form a linear pair iff they are both adjacent and supplementary. A linear pair is formed by 2 angles that are both adjacent and supplementary.

21. D OR I Is congruent to Angle D ____________ angle R.

22. List all pairs of: 7 & 63 & 2 2 3 4 5 1 67 8 j k D C B A SSI angles

23. List all pairs of: 1 & 7, 8 & 2, 6 & 4,5 & 3 2 3 4 5 1 67 8 j k D C B A vertical angles

24. D OR I Segment IR Segment DO is congruent to __________.