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

Think you’ve got your head wrapped around Parallel and Perpendicular Lines? Put your knowledge to the test. Good luck — the Stickman is counting on you!
Q. Which of the following is NOT an example of perpendicular lines?

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-intercept
If 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 = -⅓x + 7?

y = 3x + 7
y = -3x + 9
y = ⅓ + 7
y = -⅓x + 9
y = 7x – 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 = 4x
y = ¼x
y = -¼x + 7
y = -4x + 7
y = ¼x + 7
Q. Line r is parallel to another line with equation y = 3x + 1. A line with which of the following equations would be perpendicular to r?

y = -3x
y = 3x – 1
y = -⅓x + 1
y = ⅓x – 1
y = 3x + 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 transversal
Q. Which of the following is NOT true about right angles?

Right angles are all congruent to one another
Right angles are always 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