Students learn the definitions of a point, a line, a plane, and space, as well as the symbols that are used in Geometry to represent each figure. Students also learn the definitions of collinear, coplanar, and intersection. Students are then given Ge...ometric figures that are composed of points, lines, and planes, and are asked true/ false and short answer questions about the given figures. (01:06)[more]

From YouTube, produced by The Math Party National Standards Program

This one-minute video is from The Math Party National Standards Program and features a catchy tune to help students remember lines, rays, line segments, and planes. (01:07)

Students learn the definitions of parallel lines, skew lines, parallel planes, and transversals, and are asked to identify these types of lines/planes in given figures. Students are also asked to identify alternate interior angles, same-side interior... angles, and corresponding angles. Always, sometimes, and never questions are included in this lesson. (00:49)[more]

This video shows how to find the slope of a line when we know the coordinates of two points from that line and how to interpret the slope as a rate of change. Good visual images. Moves slowly. Some words may need an explanation from the teacher.

The instructor uses an electronic sketchpad to explain and demonstrates the fundamental concepts (undefined terms) of geometry: point, line, plane. (09:10)

A five minute review with background music to definitions and descriptions of points, lines, and planes. Collinear and noncollinear points are explained as well as coplanar and non coplanar points.

This is a short, thirty minute clip that is part of a much larger tutorial. In this Geometry section, the viewer will learn about the basics of geometry and cover lines, rays and planes in geometrical problems. NOTE: The sound quality is not the best....[more]

Learn about Segment Addition - This video teaches the viewer about the segment addition postulate. The instructor uses computer software for demonstration. (07:39)

This lesson uses two examples to demonstrate how to use the length of a line segment formula. This is one of a series of math video lessons created for a grade 10 Academic math course in the province of Ontario, Canada. The instructor uses computer s...oftware for his demonstration.[more]

Please make your comments on categories positive, and not just negative.

People work hard on educational categories, and we want to encourage them to make more!

Profanity (curse words), sexually suggestive remarks, and other such obviously inappropriate comments
will be deleted immediately, and are grounds for immediate expulsion. Remember, children use this website.

Personal criticism on project forums and in video content is not allowed and will be deleted immediately.
Any violations of this rule could result in expulsion from the project so please, no insults or other negative
personal remarks.

Very harshly-worded criticism of content will also be deleted promptly. Please use your vote to express your
harshest feelings. Repeated violations of this rule can result in expulsion. If you must criticize another
person's hard work, then be nice about it.

People work hard on educational categories, and we want to encourage them to make more!