Defining Terms

Question 1

Which defines ray?

Revolt · Accepted Answer

a piece of a line that starts at the endpoint and extends indefinitely in one direction

Question 2

R✔ T B D

Revolt · Accepted Answer

T

Question 3

RAD DAR✔ RAB RAC

Revolt · Accepted Answer

RAB

Question 4

Analyze the diagram to answer the questions.

Revolt · Accepted Answer

Another way to name SAC would be .: CAS; A point on ray AS is .: T; and create .: RAB

Question 5

ACS ASC CAS CAB

Revolt · Accepted Answer

CAS; Selection 1: CAS; Selection 2: T; Selection 3: RAB

Question 6

The undefined terms line and plane are needed to precisely define which mathematical term?

Revolt · Accepted Answer

parallel lines

Question 7

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?

Revolt · Accepted 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.

Question 8

Explain how rays AB and AC form both a line and an angle.

Revolt · Accepted Answer

Rays AB and AC share a common vertex at point A, which forms an angle (specifically a straight angle). Because these rays point in opposite directions and are collinear, they also form a line that extends infinitely in both directions.

Question 9

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

Revolt · Accepted 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.

Question 10

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

Revolt · Accepted Answer

Rays AB and AC extend forever in either direction.

Defining Terms Answers

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