1. bell ringer
1. What do you know about triangles? How many degrees? Types?
2. What do you know about parallel lines? Their slopes?
2. What do you know about perpendicular lines? Their slopes?

2. angles & Lines
Wednesday, March 29, 2017

3. angles
What makes an angle acute? right? obtuse? straight? reflex?

4. angles
What is the sum of the degrees of a linear angle pair? Are these angles complementary or supplementary?

5. Examples

6. angles What is it called when you cut an angle in half?
Vertical Angle Theorem – What is true about vertical angles?

7. Examples
PT bisects ∠T.

8. angles Angle Sum Theorem – How many degrees?
Exterior Angle of a Triangle – How does it relate to the two remote interior angles?

9. Examples

10. lines
How do you know if points are on a perpendicular bisector of a line segment?
What is true about a midsegment?

11. Examples

12. parallel lines cut by a transversal

13. Linear Pair postulate
p. 111

14. Example

15. vertical angles theorem
p. 112 1 3

16. Example

17. alternate interior angles theorem
p. 143 3 5

18. Example

19. alternate exterior angles theorem
p. 143 1 7

20. Example

21. consecutive interior angles theorem
p. 143 3 6

22. Example

23. consecutive exterior angles theorem1 8

24. Example

25. corresponding angles postulate1 5

26. Example

27. parallel lines cut by a transversal
Converses are true…that’s how you can prove lines are parallel. (p. 150)

28. Examples

29. exit ticket
What angle pairs are formed when parallel lines are cut by a transversal?
Homework
Parallel Lines cut by a Transversal
STUDY Notes & Examples
(will be tested even if not practiced on homework)