Cuemath
Cuemath: Perpendicular Bisectors
Provides a definition and examples of perpendicular bisectors.
Cuemath
Cuemath: Line Segment
In this lesson plan, you will learn about the various types of lines, line segments, rays, the line segment symbol, and line segment examples. Check out the interactive examples and try your hand at solving a few interesting practice...
CK-12 Foundation
Ck 12: Interactive Geometry: 1.2 Angles and Lines
Explore lines and angles, and the relationship between the two.
Free Math Help
Free Math Help: Geometry Vocabulary
The tutorial examines basic geometry vocabulary. Definitions and examples of a point, line, line segment, ray, and plane are included.
Islami City
Islami City: Mohammad Ibn Zakariya Al Razi
This site provides a biography of Islamic physician, al-Razi, also an alchemist and philosopher, famous for his contributions to several areas of science.
The Math League
The Math League: Rays
This website gives a very brief explanation and example of rays.
Mr. Martini's Classroom
Mr. Martini's Classroom: Teacher's Figure Library: Geometric Figures
This interactive resource provides an example picture of the geometric figure chosen by students to review.
Quia
Quia: Introduction to Angles
Use this website to practice angle definitions using a matching game format.
Quia
Quia: Introduction to Angles Flashcards
Use this website to practice angle definitions using a flash card format.
Quia
Quia: Introduction to Angles Concentration
Use this website to practice angle definitions using a concentration game format.
Quia
Quia: Introduction to Angles: Word Search
Use this website to practice angle definitions using a word search format.
Smithsonian Institution
Smithsonian National Zoo: Amazonia Stingray
Acting as part of the online exhibit for the Amazonia display at the National Zoo, this site explores freshwater stingrays and rays particular to the Amazon.
Free Math Help
Free Math Help: Defined Terms
The lesson discusses commonly used geometric terms. Definitions and examples of a line segment, ray, and angle are included.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Angle Basics
Find a quick, concise explanation of angles and types of angles. Several examples are given to help you understand how angles are formed and the different types of angles.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Lines, Segments, and Rays
Find a quick, concise explanation of rays, lines and line segments. Examples are given and clearly explained for each.
ClassFlow
Class Flow: Geometry Line Vote
[Free Registration/Login Required] In this lesson the teacher will use geometry and spatial sense to distinguish between point, ray, line, line segment and angle. The students will review vocabulary for these terms and then...
ClassFlow
Class Flow: Line, Ray, Line Segment
[Free Registration/Login Required] This flipchart describes the differences between a line, ray, and line segment.
Mocomi & Anibrain Digital Technologies
Mocomi: Lines and Angles
Provides details about the properties of straight lines, types of straight lines, line segments, rays, curved lines, and types of angles.
Wolfram Research
Wolfram Math World: Ray
A ray is defined and discussed here. A picture is provided to aide with the definition and key terms are linked.
Other
Muslim Scientists: Mohammad Ibn Zakariya Al Razi
Brief biography of Mohammad ibn Zakariya al-Razi, famous for his contributions to the fields and studies of medicine, astronomy, philosophy, and physics.
Curated OER
Georgia State University: Ray Diagrams for Mirrors
Georgia State University provides a discussion of curved mirrors and ray diagrams. Shows and explains the process of drawing a ray diagram to determine the image location, size and orientation.
Curated OER
Mc Spotlight: Ray Kroc
Gives very brief biography on Ray Kroc, founder of McDonald's, including a picture.