1 4 segments rays parallel lines and planes
Download
1 / 10

1-4 Segments, Rays, Parallel Lines, and Planes - PowerPoint PPT Presentation


  • 105 Views
  • Uploaded on

1-4 Segments, Rays, Parallel Lines, and Planes. Objectives: Define line segments and rays Properly name line segments and rays Identify parallel lines and skew lines. Line Segments. B. A. A line segment is part of a line containing two endpoints and all points between them.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' 1-4 Segments, Rays, Parallel Lines, and Planes' - urielle-salinas


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
1 4 segments rays parallel lines and planes
1-4 Segments, Rays, Parallel Lines, and Planes

Objectives:

  • Define line segments and rays

  • Properly name line segments and rays

  • Identify parallel lines and skew lines


Line segments
Line Segments

B

A

  • A line segment is part of a line containing two endpoints and all points between them.

  • Unlike lines, which extend forever in both directions, line segments have a definite beginning and end

  • A line segment is named with the endpoints

AB or BA


Rays

  • A ray is part of a line that consists of one endpoint and all points of the line extending in one direction

  • Name a ray using the endpoint first and then another point on the ray

    • When naming, make sure the arrow points away from the endpoint.

B

A

AB , not BA


Rays continued
Rays, continued

  • Are these two rays the same?

B

AB

A

B

A

BA

  • No

  • Different endpoints

  • Extend in different directions


Opposite rays
Opposite Rays

  • Are two collinear rays with the same endpoint

  • Always form a line

J

K

L

KJ and KL are opposite rays


Parallel lines
Parallel Lines

  • Lines that

    • Never intersect

    • Extend in the same directions

    • Coplanar


Skew lines
Skew lines

Lines that:

  • Never intersect

  • Are noncoplanar

  • Extend in different directions


Parallel planes
Parallel Planes

  • Parallel planes are planes that never intersect

    • Example: the purple planes in the above illustration

  • A line and plane that never intersect are also parallel


Learning check and summary
Learning Check and Summary

  • Which of the following has no endpoints?

    • Ray, Line Segment, Line

  • Which of the following has two endpoints?

    • Ray, Line Segment, Line

  • Which of the following has one endpoint and extends in one direction?

    • Ray, Line Segment, Line

  • Which of the following extend in the same direction?

    • Parallel lines, skew lines

  • Which of the following extend in different directions?

    • Parallel lines, skew lines


Exercises
Exercises

  • P. 13-15 All

  • P. 253 All

  • P. 255 All


ad