Lesson 3.1: Parallel and Perpendicular Lines Answers

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Consider the diagram.

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A
non-coplanar.
B
parallel.
C
perpendicular.
D
skew.
3

Consider the diagram.

Question illustration
c
coplanar.
p
parallel.
p
perpendicular.
s
skew.
6

Planes Q and R are parallel planes. Plane Q contains line a. Plane R contains line b.

Question illustration
l
lines a and b must be parallel.
l
lines a and b cannot be parallel.
l
lines a and b must be skew.
l
lines a and b must be perpendicular.
7

Planes T and X are parallel. Plane T contains line a. Plane X contains line b.

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A
They are skew and will never intersect.
B
They are parallel and will never intersect.
C
They are perpendicular and will intersect.
D
They will intersect at two points.
8

Planes Q and R are parallel. Lines a and b are shown on planes Q and R, respectively.

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A
They are parallel lines.
B
They are perpendicular lines.
C
They are skew lines.
D
They will intersect.
9

Kevin says that lines p and m will eventually intersect.

Question illustration
A
No, because they are non-coplanar.
B
No, because they are parallel.
C
Yes, because they are perpendicular.
D
Yes, because they are coplanar.

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