1. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19 odds, 25­33 odds, 35 ec 1
September 25, 2013
Sep 29­2:39 PM
Bellwork Identify the type of angles.
1. <5, <7
2. <3, <6
3. <1, <8
4. <15, <16
5. <13. <10
1 2
3
4
5
6
7
8
9 10
11 12
13 14
15 16
corresponding
alternate interior
alternate exterior
supplementary
vertical

2. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19 odds, 25­33 odds, 35 ec 2
September 25, 2013
Sep 29­2:46 PM
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, 25­33 odds, 35 ec 3
September 25, 2013
Sep 30­1:44 PM
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, 25­33 odds, 35 ec 4
September 25, 2013
Sep 25­8:31 AM

5. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19 odds, 25­33 odds, 35 ec 5
September 25, 2013
Sep 30­1:59 PM
With a partner, complete Guided Practice #1 & 2.

6. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19 odds, 25­33 odds, 35 ec 6
September 25, 2013
Sep 30­2:00 PM

7. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19 odds, 25­33 odds, 35 ec 7
September 25, 2013
Sep 30­2:01 PM

8. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19 odds, 25­33 odds, 35 ec 8
September 25, 2013
Sep 30­2:05 PM

9. 3.2 Parallel Lines & Transversals
HW pg. 157 #3­19 odds, 25­33 odds, 35 ec 9
September 25, 2013
Sep 30­2:04 PM
HW pg. 157
#3­19 Odds
23­33 Odds
35 Extra Credit