Parallel/Perpendicular Lines
Review
Parallel Lines Cut by Transversal
Proving Lines Parallel
Angle Pairs
100

What is the symbol and the definition of perpendicular lines?

Symbol - upside down T..... Lines that intersect at 90 degrees

100

Are the 2 sentences in verses, converses, or contrapositives?

If it's not raining then the game will be played

If the game is not played then it is raining.

Contrapositive

100

What angle pair is formed by 3 and 6? If angle 3 is 120, what is the measure of angle 6?


Alternate interior, 120

100

If angle 2 is congruent to angle 6, which reason would prove that c and d are parallel?

IF alternate interior angles congruent, then the lines are //

100

What angle pair vocabulary word is shown?   What is the measure of angle DAC?

Complementary
40

200

Parallel lines have __________ slopes. 

Equal or the same

200

A : Anne earns an A.      W: Doesn't work hard

Translate: ~W ^ A

Anne works hard and gets an A

200

What kind of angle pair is formed by angles 4 and 8? If angle 4 is 75, what is the measure of angle 8?


Corresponding, 75

200

Which lines, if any, would be parallel if angle 8 and 10 were congruent? What reason?

a and b, If alternate interior angles congruent then the lines are parallel

200

What vocabulary word should be used to describe angle 3 and angle 5?   Are they congruent or supplementary?


Vertical angles
congruent

300

What is the slope of a line that is parallel to 

4/3
(same slope)

300

M is the midpoint of AB.   AM = 7, what is the length of AB?

AB = 7+7=14

300

Name the angle pair and find the value of x. 

x=14

300

Which lines would be parallel, if any, if angles 7 and 5 were congruent? What reason?


c and d, If corresponding angles congruent, then //

300

What vocabulary word describes the marked angles?  Name an angle congruent to angle CHG?

Linear Pair
Angle DHF (FHD) or HGB (BGH) or AGE (EGA)

400

What is the slope of a line that is perpendicular to a line with a slope of 5?

-1/5

400

B is between A and C.   AB = 3x - 2, BC = 12, AC = 4x

3x  - 2 +12 = 4x

x  = 10

400

Name the angle pair and find the value of x. 

x=13, same-side interior

400

Which lines would be parallel, if any, angle 6 and 7 are congruent?


none, consecutive interior angles should be supplementary

400

Using the parallel lines and the diagram, determine the measure of angle AGE


Angle AGE = 80
(x = 20 - but that wasn't the question!)

500

What slope would be perpendicular to the line that passes through (-3,7) and (4, 2)?

7/5

500

Draw a Venn diagram and shade A u B

Ask the teacher to check your answer

500


x=5,

y=146

500

Which lines, if any, would be parallel if angle 6 and congruent to angle 10?


None, they do not use 2 lines and a transversal

500

Given the parallel lines, cut by transversals and 

angleJCH=90 and angle1 = 40

find the measure of angle FCD

140