Geometry: Segments and Rays Flashcards

Questions and Answers

What is a segment?

It is a part of a line consisting of two endpoints and all points between them.

How do you name a line segment?

Use the endpoints of the line segment and then put a line segment symbol above the two endpoints.

What is a ray?

A portion of a line that starts at a point and goes off in a particular direction to infinity.

How do you name a ray?

A ray is named with its endpoint first, followed by a point on the line of its direction. Signup and view all the answers

What are opposite rays?

Two rays that have the same endpoint and extend in opposite directions. Signup and view all the answers

How are opposite rays named?

They are named with two points, where the first is the endpoint and the second is any point on the ray. Signup and view all the answers

Parallel lines are -

Coplanar lines that do not intersect. Signup and view all the answers

Skew lines are -

Non-coplanar lines that are not parallel and do not intersect. Signup and view all the answers

Parallel planes are -

Planes that do not intersect. Signup and view all the answers

Parallel segments -

Lie in the same plane, and the lines that contain them do not intersect. Signup and view all the answers

Skew segments -

Are segments that do not lie in the same plane. Signup and view all the answers

Parallel planes are parallel if they -

Don't intersect. Signup and view all the answers

Study Notes

Segments

A segment is a portion of a line defined by two endpoints and all points in between.

Naming Segments

To name a line segment, use the endpoints and place a line segment symbol above the two points.

Rays

A ray begins at a point and extends infinitely in one direction, lacking measurable length.

Naming Rays

Rays are named by stating the endpoint first, followed by a second point on the ray's path. The same endpoint and direction designate identical rays.

Opposite Rays

Opposite rays share the same endpoint but extend in opposite directions, forming a straight line.

Naming Opposite Rays

Named using two points, with the first as the endpoint, and the second as any point on the ray extending outward.

Parallel Lines

Parallel lines are coplanar and do not intersect, maintaining a constant distance from each other.

Skew Lines

Skew lines are non-coplanar; they are neither parallel nor do they intersect.

Parallel Planes

Parallel planes are defined as planes that do not intersect.

Parallel Segments

Parallel segments lie in the same plane and do not intersect in the lines that contain them.

Skew Segments

Skew segments do not reside within the same plane, indicating their non-coplanarity.

Conditions for Parallel Planes

Planes are considered parallel if they do not intersect.

Description

Test your understanding of segments, rays, and their definitions with these flashcards. Learn how to identify and name different line concepts in geometry. Perfect for students looking to reinforce their knowledge in a fun and interactive way.