What do you call angles that add up to 180°
Supplementary Angles
Name all of the Linear Pairs

(∠1,∠2) (∠2,∠3) (∠1,∠4) (∠4,∠3)
(∠5,∠6) (∠6,∠7) (∠7,∠8) (∠5,∠8)
what is a line that intersects two or more lines at different points called?
Transversal
If angle 1 is 120 degrees, what is the measure of angle 8?

120 degrees
Name the Angle pair for ∠1 and ∠4

Vertical angles
What is true about all vertical angles?
they are congruent.
If degrees of angles are = to each other, angles are...
Congruent
If the measure of angle 2 is 30 degrees what is the measure of angle 8?

150 degrees
name the angle pair of ∠3 and ∠5.

The Same-Side Interior Angles
If ∠3 is 125° what is ∠2? What type of angle pair are they?
125°, Vertical Angles
what are on opposite sides of the transversal and inside the parallel lines?
Alternate interior angles
If the measure of angle 4 is 135 degrees what is the measure of angle 5?
135 degrees
What is the name of the angle pair ∠1 and ∠5?
Consecutive Angles
What is the sum of ∠1 and ∠7?
180°
What are the three types of angle relationships that are supplementary.
Linear pair, same side exterior and same side interior,
Solve for a
28
Name the angle pair of ∠2 and ∠7.

alternate exterior angles
Determine x and find the angles.

x = 34
angle 1 = 74
angle 2 = 106
Draw an example of alternate interior angles and same side interior angles.

What is the measure of angle S
138