1. Chapter 2.5 Proving Angles Congruent

2. Bell Work If you get an A, then you’ll get money
1) Amanda got a 95% in science
Conclusion:
2) Amanda got $100 from grandma
3) If you are fit, then you are hot
If you are hot, then you will get a lot of dates

3. Vocabulary
Complementary Angle = two angles that add up to 90 (right angle)
Supplementary Angle = two angles that add up to 180 (straight line)
Theorem = A theorem is a conjecture that is proven

4. Vocabulary
Paragraph proof = Proof written in paragraph form

5. Vertical Angles Theorem
Vertical angles are congruent

6. Example
Which are vertical angles?

7. Congruent Supplements Theorem
If two angles are supplements of the same angle (or of congruent angles), then the two angles are congruent

8. Congruent Complements Theorem
If two angles are complements of the same angle (or of congruent angles), then the two angles are congruent
All right angles are congruent
If two angles are congruent and supplementary, then each is a right angle

9. Solving Example with Vertical Angles

10. Solving Example with Supplementary Angle

11. Solving Example with Complementary Angle

12. Solving problem with combination of vertical and supplementary

13. Activity (5 min)
Write the summary about this section in your Cornell note.
Some questions to consider:
What is the topic about?
What did I learn from this lesson?
What questions do I have?
How does it relate to other lessons/real life?

14. Classwork
P 112 #1-6, 12, 13, 30-32