Card 1 of 20
EasyStudy card 1
Prompt
How many endpoints does a line have?
Answer
None; it extends indefinitely in both directions.
MathChapter 16: Lines and Angles
Flashcards
Lines, Segments, and Rays Flashcards
Twenty concise cards on line objects, notation, point order, segment addition, midpoint, and bisectors.
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Card 1 of 20. Answer hidden.
Card 2 of 20
EasyStudy card 2
Prompt
How many endpoints does a segment have?
Answer
Two.
Card 3 of 20
EasyStudy card 3
Prompt
How many endpoints does a ray have?
Answer
One.
Card 4 of 20
EasyStudy card 4
Prompt
In ray \(\overrightarrow{PQ}\), which point is the endpoint?
Answer
\(P\), the first named point.
Card 5 of 20
EasyStudy card 5
Prompt
What does collinear mean?
Answer
Lying on the same straight line.
Card 6 of 20
EasyStudy card 6
Prompt
What does \(\overline{PQ}\) name?
Answer
The segment object with endpoints P and Q.
Card 7 of 20
EasyStudy card 7
Prompt
What does \(PQ\) usually mean in a length calculation?
Answer
The numerical distance from P to Q.
Card 8 of 20
MediumStudy card 8
Prompt
State segment addition when Q lies between P and R.
Answer
\(PQ+QR=PR\).
Card 9 of 20
MediumStudy card 9
Prompt
If M is midpoint of PR, what equalities hold?
Answer
\(PM=MR=PR/2\).
Card 10 of 20
MediumStudy card 10
Prompt
What visual mark commonly shows congruent segment pieces?
Answer
Matching tick marks.
Card 11 of 20
MediumStudy card 11
Prompt
What is a segment bisector?
Answer
A line or segment intersecting another segment at its midpoint.
Card 12 of 20
MediumStudy card 12
Prompt
Must a segment bisector be perpendicular?
Answer
No; perpendicularity requires its own mark or statement.
Card 13 of 20
MediumStudy card 13
Prompt
What makes two rays opposite?
Answer
They share an endpoint, are collinear, and point in opposite directions with the endpoint between the outer points.
Card 14 of 20
MediumStudy card 14
Prompt
Does reversing the point order change a line name?
Answer
No. Line PQ and line QP name the same line.
Card 15 of 20
MediumStudy card 15
Prompt
Does reversing the point order change a ray name?
Answer
Usually yes, because the endpoint changes.
Card 16 of 20
MediumStudy card 16
Prompt
If one midpoint half is 13, what is the whole segment?
Answer
26.
Card 17 of 20
HardStudy card 17
Prompt
What is the fastest check after solving segment addition?
Answer
Verify that the positive part lengths sum to the stated whole.
Card 18 of 20
HardStudy card 18
Prompt
A 3:5 split has total length 64. What is the shorter piece?
Answer
24; eight ratio parts make each part 8.
Card 19 of 20
HardStudy card 19
Prompt
Why should a segment diagram not be measured visually?
Answer
Its relationships come from labels and marks; it may not be drawn to scale.
Card 20 of 20
HardStudy card 20
Prompt
What is a common final-step trap in algebraic segment problems?
Answer
Reporting x instead of substituting back for the requested length.
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