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 an example of parallel lines?

The wall and the floor of a room

A ladder leaning against a wall

Shelves on a bookcase

The design of a plaid shirt

The stripes on a zebra

Q. How are parallel lines marked in figures?

Matching arrowheads are used to indicate parallel lines

Matching tick marks are used to indicate parallel lines

Any lines that do not intersect are assumed to be parallel

Any lines that intersect are assumed to be parallel

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

Q. Which of the following is NOT true?

Parallel lines never intersect

The slopes of two parallel lines are the same

Lines with undefined slopes can still be parallel

Any line can be parallel to itself

Parallel lines cannot have the same *y*-intercept

Q. Which of the following is the equation of a line that is parallel to *y* = ½*x* + 3?

2*y* – *x* = 6

4*y* – 2*x* = 8

2*y* + *x* = 8

Q. When two parallel lines are cut by a transversal, which of the following are supplementary?

Corresponding angles

Vertical angles

Alternate interior angles

Consecutive interior angles

Alternate exterior angles

Q. What is the term that best describes ∠1 and ∠7?

Corresponding angles

Vertical angles

Alternate interior angles

Consecutive interior angles

Alternate exterior angles

Q. What is the term that best describes ∠4 and ∠8?

Corresponding angles

Vertical angles

Alternate interior angles

Consecutive interior angles

Alternate exterior angles

Q. Which of the following is true?

∠1 ≅ ∠2

∠3 ≅ ∠8

m∠2 = 180 – m∠5

m∠1 = 180 – m∠7

∠4 ≇ ∠6

Q. If m∠1 = 3*x* + 7 and m∠8 = 10*x* – 9, what is the value of m∠4?

2.3

7

14

49

131

Q. If m∠4 = 11*y* – 2 and m∠6 = 8*y* + 13, what is the value of m∠3?

5

10

53

127

175