3-2

3-2 Properties of Parallel Lines

page 148

10/9/20

Postulate 3-1 Corresponding Angles Postulate

If a transversal intersects two parallel lines, the ncorresponding angles are congruent.

Theorem 3-1 Alternate Interior Angles Theorem

If a transversal intersects two parallel lines, then alternate interior angles are congruent.

Theorem 3-2 Same Side Interior Angles Theorem

If a transversal intersects two parallel lines, then same-side interior angles are supplementary.

WHITE BOARD TO SOLVE PROBLEM 2 GOT IT

Theorem 3-3

Alternate Exterior Angles Theorem

• If a transversal intersects two parallel lines then alternate exterior angles are congruent.

Multiple Choice

Angle 1 = 27^o
Find the measure of angle 4

• 27^o
• 153^o
• 63^o
• 90^o

Multiple Choice

If angle B measures 120 degrees, find the measure of angle Q.

• 120 degrees
• -30 degrees
• 60 degrees

Multiple Choice

If angle P measures 60 degrees, what is the measure of angle C?

• 60 degrees
• 30 degrees
• 120 degrees

Multiple Choice

Angle Q and B are...

• Supplementary
• Congruent

Multiple Choice

Angle A and C are...

• Supplementary
• Congruent

Multiple Choice

What is the value of x?

• 27
• 72
• 108
• 153

Multiple Choice

Which pair of angles add up to 180 degrees?

• A and W
• C and X
• D and X
• A and G

Multiple Choice

Angle 1 = 27^o
Find the measure of angle 4

• 27^o
• 153^o
• 63^o
• 90^o

Multiple Choice

Which is a pair of corresponding angles?

• ∠4 and ∠3
• ∠4 and ∠1
• ∠4 and ∠2
• ∠4 and ∠8

Multiple Choice

What is the Angle Relationship?

• Adjacent

• Corresponding

• Vertical