Defining Terms Answers

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3

RAD DAR✔ RAB RAC

A
RAD
B
DAR
C
RAB
D
RAC
4

Which statements are true? Select three options.

A
and are parallel.
B
and are parallel.
C
and are perpendicular.
D
and must intersect.
E
lies in plane X.
F
lies in plane X.
5

The definition of parallel lines requires the undefined terms line and plane, while the definition of perpendicular lines requires the undefined terms of line and point. What characteristics of these geometric figures create the different requirements?

Answer:

Parallel lines do not intersect. Parallel lines must be coplanar. Perpendicular lines intersect at one point. Perpendicular lines intersect so plane is not required in the definition.

6

Which geometric figures are drawn on the diagram? Check all that apply.

A
Option
B
Option
C
∠ABC
D
Option
E
Option
F
∠BCE
G
Option
7

alwayssometimesnever

A
always
B
sometimes
C
never
8

Which defines ray?

A
a piece of a line with two endpoints
B
all points equidistant from a given point
C
two line segments with a common endpoint
D
a piece of a line that starts at the endpoint and extends indefinitely in one direction
10

Which statements are true regarding the diagram? Check all that apply.

A
CB is contained on line n.
B
is contained on line m.
C
Ray BC is the same as ray CB.
D
Ray AD is the same as ray AC.
E
∠EAD is created from and .
F
∠ECB is created from and .
11

What did you include in your response? Check all that apply.

A
Angles are rays with a shared endpoint.
B
Lines extend forever in either direction.
C
Rays AB and AC extend forever in either direction.
12

What did you include in your response? Check all that apply.

A
Parallel lines do not intersect.
B
Parallel lines must be coplanar.
C
Perpendicular lines intersect at one point.
D
Perpendicular lines intersect so plane is not required in the definition.
13

alwayssometimesnever

A
always
B
sometimes
C
never
14

alwayssometimesnever

A
always
B
sometimes
C
never

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