1. Section 3-1: Properties of Parallel Lines
Warm Up
Same Side Interior Angles
Name a pair of complementary angles
Name a pair of supplementary angles 4 3 5 1 2
Transversal
On parallel lines, corresponding angles are___________________
Definition:
Same Side Exterior Angles
Alternate Interior Angles
On parallel lines, same side interior angles are___________________
Corresponding Angles
On parallel lines, alternate interior angles are___________________
Alternate Exterior Angles
On parallel lines, same side exterior angles are___________________
This is the symbol that lets us know that lines are parallel to each other.
On parallel lines, alternate exterior angles are___________________

2. What kind of angles are <1 & <2?7. 1. 2. 3. 4. 6. 5. 1 2 1 2 1 1 2 2 2 2 1 2
Identify each pair of angles.
1. < 1 & < 2 _____________________ 2. < 2 & < 3 _____________________
3. < 3 & < 4 _____________________ 4. < 4 & < 5 _____________________
5. < 5 & < 6 _____________________ 6. < 4 & < 7 _____________________
7. < 3 & < 5 _____________________ 8. < 5 & < 8 _____________________ 1 2 3 8 5 4 7 6
Find the value of <1 & <2. 3. 2.
42°
97° 1. 1 1
103° 2 1
43° 5. 1 2 2 4.
111°
52° 2 1
47° 2
Solve for x. 1. 2. 3. 4.
7x-9
22x+17
8x+13
5x+16
9x+25
15x-11
4x+21
7x+20