# Parallel and Perpendicular Lines

# Parallel and Perpendicular Lines: A Perpendicular Fork in the Road Quiz

Think you’ve got your head wrapped around

*? Put your knowledge to the test. Good luck — the Stickman is counting on you!***Parallel and Perpendicular Lines**Q. Which of the following is NOT an example of perpendicular lines?

Railroad tracks and railroad ties

Table legs and a tabletop

The dashed lines separating lanes

A four-way intersection

The rim and backboard of a basketball hoop

Q. How are perpendicular lines marked in figures?

Figures cannot denote perpendicular lines, so it must be explicitly stated

Matching tick marks are used to indicate perpendicular lines

A single box is placed in one of the angles created by the intersecting perpendicular lines

Four boxes are placed in the four angles created by the intersecting perpendicular lines

Any angles that look like right angles are assumed to be the result of perpendicular lines

Q. Which of the following is NOT true?

The intersection of perpendicular lines results in a right angle

The intersection of perpendicular lines results in four congruent angles

Perpendicular lines have negative reciprocal slopes

Perpendicular lines cannot have the same

*y*-interceptIf two lines are both perpendicular to a third line, they are parallel to each other

Q. What is the equation of a line perpendicular to

*y*= -⅓*x*+ 7?*y*= 3

*x*+ 7

*y*= -3

*x*+ 9

*y*= ⅓ + 7

*y*= -⅓

*x*+ 9

*y*= 7

*x*– 3

Q. Line

*q*goes through points (1, 3) and (0, 7). Line*p*is perpendicular to*q*and passes through point (8, 2). What is the equation for line*p*?*y*= 4

*x*

*y*= ¼

*x*

*y*= -¼

*x*+ 7

*y*= -4

*x*+ 7

*y*= ¼

*x*+ 7

Q. Line

*r*is parallel to another line with equation*y*= 3*x*+ 1. A line with which of the following equations would be perpendicular to*r*?*y*= -3

*x*

*y*= 3

*x*– 1

*y*= -⅓

*x*+ 1

*y*= ⅓

*x*– 1

*y*= 3

*x*+ 1

Q. Line

*j*is perpendicular to line*k*. Line*k*is parallel to line*l*. Which of the following is true?Line

*j*is parallel to line*l*Line

*k*is perpendicular to line*l*Line

*j*is parallel to line*k*Line

*j*is perpendicular to line*l*Line

*k*is a transversalQ. Which of the following is NOT true about right angles?

Right angles are all congruent to one another

Right angles are usually 90° in measure

Right angles indicate that two segments are perpendicular

Two right angles are always supplementary

All of the above are true

Q. What is the value of

*x*?

29

31

45

60

90

Q. What are the values of

*x*and*y*?

*x*= -9,

*y*= 10

*x*= 9,

*y*= 10

*x*= 9,

*y*= -10

*x*= 10,

*y*= 9

*x*= -10,

*y*= 9