4.G.1 - Lines and Line Segments Flashcards

Questions and Answers

What is a line?

Part of a line with two endpoints

A continuous collection of points (correct)

An exact location in space

Lines that intersect

What is a line segment?

Part of a line with two endpoints

What are perpendicular lines?

Lines that intersect to form right angles

Parallel lines are lines that never ____

intersect Signup and view all the answers

What are 'real-life' intersecting lines?

Lines that cross at one point Signup and view all the answers

'Real-life' perpendicular lines are lines that intersect at a ____

right angle Signup and view all the answers

What are intersecting lines?

Lines that cross at one point Signup and view all the answers

What is an intersection?

The point of intersecting lines Signup and view all the answers

Intersecting roads are roads that ____

cross Signup and view all the answers

What is a point?

An exact location in space Signup and view all the answers

What is a ray?

A part of a line with one endpoint that continues indefinitely in one direction Signup and view all the answers

What is an endpoint?

Points marking the end of a segment Signup and view all the answers

Study Notes

Lines and Line Segments

Line: A continuous collection of points extending infinitely in both directions. Example: Line AB.
Line Segment: A portion of a line defined by two distinct endpoints.

Types of Lines

Perpendicular Lines: Lines that intersect to create right angles (90 degrees).
Parallel Lines: Lines that never meet, remaining constant distance apart.

Intersecting Lines

Intersecting Lines: Lines that cross at a single point, identifiable by tracing with a finger.
Intersection: The exact point where two intersecting lines cross.

Real-Life Applications

Intersecting Roads: Roads that cross each other at a point, creating intersection zones.
"Real Life" Perpendicular Lines: Situations where two lines form right angles in everyday contexts.

Points and Rays

Point: An exact location in space without any dimension.
Ray: A part of a line that has one endpoint and extends infinitely in one direction.
Endpoint: The specific points that signify the termination of a line segment.

Description

Test your knowledge on the concepts of lines and line segments with these flashcards. Learn definitions and key characteristics of essential geometric terms such as parallel lines, perpendicular lines, and line segments. Perfect for students at the elementary level to enhance their understanding of basic geometry.