Curated OER
Line, Line Segments and Rays
In this geometry worksheet, students identify items as either lines, line segments or rays by checking the appropriate box beneath each figure.
PBS
Pbs Learning Media: What's a 360?
In this Cyberchase video segment, Harry tries to snowboard and learns how to measure and identify many common angles.
Georgia Department of Education
Ga Virtual Learning: Geometric Optics
This interactive unit will help students to understand the basics of geometric optics. Learn what happens when light strikes the boundary between two media as well as the difference between a real and virtual image? Also explore the law...
Cuemath
Cuemath: Lines
Learn all about lines. This lesson targets what is a line and the different types. Check-out the interactive simulations to know more about the lesson and try your hand at solving a few interesting practice questions at the end of the page.
PBS
Pbs Learning Media: Directions to Hen Rock
The CyberSquad has to deal with angles and distances to locate a treasure chest in this video segment from Cyberchase.
Mr. Martini's Classroom
Mr. Martini's Classroom: Basic Geometry: Points, Lines, and Angles
Students can review basic geometric terms using these self-check, multiple choice questions. Three levels of questions are provided.
Shodor Education Foundation
Shodor Interactivate: Lesson: Lines, Rays, Line Segments, & Planes
This robust lesson plan for upper elementary and middle school grades introduces the concepts for lines, rays, line segments, and planes. Resources are linked to it and ready for your use.
US Navy
Naval Research Laboratory: Clementine Lunar Mission
This resource provides information about the Clementine Lunar Mission
CK-12 Foundation
Ck 12: Geometry: Identification of Angles by Vertex and Ray
[Free Registration/Login may be required to access all resource tools.] Understand how angles are formed and identify an angle's rays and vertex. Students can master the concept by watching a video, examining guided notes, reviewing...
NASA
Nasa Space Science Data Archive: Mercury From Mariner 10, Degas Crater
Single image mosaic from NSSCD Mariner 10 collection. Shows detail of an impact basin with typical ray structures. Thumbnail image links to large graphic file with more detail.
Other
Sea and Sky: Sharks and Rays
Selected species of sharks and rays are described and illustrated with photographs.
Smithsonian Institution
Smithsonian American Art Museum: Man Ray
Man Ray is profiled at this site in a format that begins with a brief biographical sketch of his life. His works are then listed by appearance in the museum's database. Each work is presented in thumbnail format with brief information...
CK-12 Foundation
Ck 12: Volume of Pyramids
[Free Registration/Login Required] Students explore identification of angles by vertex and ray by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more...
Sophia Learning
Sophia: Complementary and Supplementary Angles
Complementary and Supplementary angles are explored in this tutorial video. [9:17] A PowerPoint presentation provides definitions of angle terms and a video offers examples for finding the missing angle in a supplementary or...
University of Georgia
University of Georgia: Inter Math: Exterior Angles
Intermath Dictionary's site defines terms relating to angles, gives examples, and offers interactive exercises.
Math Planet
Math Planet: Pre Algebra: Geometry Fundamental Statements
Provides examples and a video lesson that introduce fundamental statements of geometry.
Khan Academy
Khan Academy: Identify Points, Lines, Line Segments, Rays, and Angles
Recognize rays, lines, and line segments in geometric figures. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Lines, Line Segments, and Rays Review
Reviews the characteristics of lines, lines segments, and rays, and presents questions for additional practice. Questions include hints.
Khan Academy
Khan Academy: Draw Rays, Lines, & Line Segments
Draw rays, lines, and line segments with given points. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Geometry: Basic Geometric Definitions
[Free Registration/Login may be required to access all resource tools.] In this lesson students identify points, rays, lines, and line segments. Students examine guided notes, review guided practice, watch instructional videos and...
CK-12 Foundation
Ck 12: Geometry: Basic Geometric Definitions
[Free Registration/Login may be required to access all resource tools.] In this lesson students define and use geometric terms. Students examine guided notes, review guided practice, watch instructional videos and attempt practice problems.
Math Planet
Math Planet: Geometry: Measure and Classify an Angle
Explains the terms and symbols used to discuss line angles, what an angle is, and the types of angles. Includes short video lesson demonstrating how to use a protractor to measure an angle. [0:57]
Mathigon
Mathigon: Geometry: Euclidean Geometry: Definitions
This lesson focuses on Euclidean Geometry terminology; such as line, point, line segment, congruence, circle, radius, ray, and more. It defines each term and provides an example of each.
Math Open Reference
Math Open Reference: Ray
Learn about rays with this handy reference guide. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.