1. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19
odds, 23­33
odds, 35 EC
September 25, 2014
Bellwork Identify the type of angles.
1. <5, <7
corresponding
4
3
8
2. <3, <6
2
7
alternate interior
1 5 6
3. <1, <8
alternate exterior
11 12
9 10
15 16
4. <15, <16
13 14
supplementary
5. <13. <10
vertical

2. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19
odds, 23­33
odds, 35 EC
September 25, 2014
3.2 Parallel Lines & Transversals
Postulate 15: Corresponding Angles Postulate
If 2 parallel lines are cut by a transversal,
then the pairs of corresponding angles are congruent.
2
6
<2 ≅ <6

3. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19
odds, 23­33
odds, 35 EC
September 25, 2014
Theorem 3.1: Alternate Interior Angles Theorem
If 2 parallel lines are cut by a transversal,
then the pairs of alternate interior angles are congruent.
4
5
<4 ≅ <5
Theorem 3.2: Alternate Exterior Angles Theorem
If 2 parallel lines are cut by a transversal,
then the pairs of alternate exterior angles are congruent.
1
8
<1 ≅ <8
Theorem 3.3: Consecutive Interior Angles Theorem
If 2 parallel lines are cut by a transversal,
then the pairs of consecutive interior angles are
supplementary
3 5
<3 + <5 = 180

4. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19
odds, 23­33
odds, 35 EC
September 25, 2014
With a partner, complete Guided Practice #1 & 2.

5. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19
odds, 23­33
odds, 35 EC
September 25, 2014

6. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19
odds, 23­33
odds, 35 EC
September 25, 2014

7. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19
odds, 23­33
odds, 35 EC
September 25, 2014

8. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19
odds, 23­33
odds, 35 EC
September 25, 2014
HW pg. 157
#3­19
Odds
23­33
Odds
35 Extra Credit