# Parallel and Perpendicular Lines: Get in Line, Get in Shape 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. How many sets of parallel line segments are there in a regular octagon?

1
2
4
6
8
Q. How many sets of parallel line segments are there in a regular pentagon?

0
2
2.5
5
10
Q. What is the sum of all the interior angles in a dodecagon (12 sides)?

75°
150°
1080°
1800°
2160°
Q. What is the measure of one interior angle in a regular heptagon (7 sides)?

128.1°
128.6°
129.3°
900°
1260°
Q. Which of the following is a summary of Euclid's parallel postulate?

If two lines are parallel and crossed by a transversal, their corresponding angles will be congruent
If a line crosses two other lines and their two consecutive interior angles are supplementary, the two lines are parallel
If a line crosses two other lines and their two consecutive interior angles are not supplementary, the two lines are not parallel
If two lines are parallel and crossed by a transversal, their consecutive interior angles are supplementary
If two lines are parallel and crossed by a transversal, their consecutive interior angles are congruent
Q. What is the minimum number of right angles possible in a quadrilateral?

0
1
2
3
4
Q. Which of the following shapes cannot have any parallel lines?

Square
Pentagon
Decagon
Triangle
Q. Which of the following shapes must have at least one set of parallel lines?

Nonagon
Pentagon
Trapezoid
Triangle
Q. Which of the following shapes must have at least one set of perpendicular segments?

Right triangle
Regular pentagon
Regular octagon
Regular nonagon
Q. Which of the following shapes must have at least one set of perpendicular segments?

Parallelogram
Trapezoid