The geometry teacher's class agenda includes presenting theorem 2.4, passing back a quiz and reviewing it, and having students complete an exit slip. Students will learn to use four new theorems to complete two-column proofs by the end of class. The bell work involves defining complementary angles and determining if example angle pairs are complementary. The rest of the class will include finishing the review of 2.4, an in-class homework quiz using examples from the textbook, and an exit slip about the students' weekend.

1. Geom2­4hour3.notebook September 20, 2011
Please have your definition log (assignment from
yesterday) on your desk so that I can look at it while you
do your bell work.
Thank you!
BELL WORK:
Read the definition of complementary angles
carefully from either your definition log or p.66
of the book.
Are 1, 2, and 3 complementary angles?
Why or why not?
Agenda for the day:
• Present 2.4
• Pass back quiz and go over
• exit slip
1

2. Geom2­4hour3.notebook September 20, 2011
By the end of class, you will be able
to utilize FOUR new theorems to
complete 2­column proofs.
BELL WORK: p.79 #5
2

3. Geom2­4hour3.notebook September 20, 2011
Agenda for the day:
• review/finish 2.4
• in­class homework quiz
• exit slip
1
700 2
A
Given: 1 is supplementary to A.
2 is supplementary to A.
Can we come to any conclusions?
Theorem: If angles are supplementary to the same angle,
then they are congruent.
3

4. Geom2­4hour3.notebook September 20, 2011
A
Z
8
Given: 8 is complementary to A.
Z is complementary to A.
Can we come to any conclusions?
Theorem: If angles are complementary to the same angle,
then they are congruent.
S
B
Given: B is supp. to V.
V D is supp. to S.
V S.
D
Can we come to any conclusions?
Theorem: If angles are supplementary to congruent
angles, then they are congruent.
4

5. Geom2­4hour3.notebook September 20, 2011
V
D Given: B is comp. to V.
D is comp. to S.
V S.
B
S
Can we come to any conclusions?
Theorem: If angles are complementary to congruent
angles, then they are congruent.
Given:
Conclusion: 1 2 3 4
5

6. Geom2­4hour3.notebook September 20, 2011
A
Given: D
B C
Conclusion:
H G
Given:
F
E J
Conclusion:
6

7. Geom2­4hour3.notebook September 20, 2011
Given:
K R P
Conclusion:
M O
p.79 #7
K J
Given:
Conclusion: F H
G
7

8. Geom2­4hour3.notebook September 20, 2011
1)
2)
3)
4)
IN­CLASS HOMEWORK QUIZ:
You may use your notes and book. You may use a partner.
Complete the following problems and turn in by the end of the hour:
p.79 #1,2,4,6,8
For #6, just provide a conclusion. You DO NOT need to prove.
EXIT SLIP:
Did you go to the Pumpkin Festival? If so, what was your
favorite part? Did you work any booths or tents?
8