Brian McLogan
what is a line
👉 Learn essential definitions of points, lines, and planes. A point defines a position in space. A line is a set of points. A line can be created by a minimum of two points. A plane is a flat surface made up of at least three points. A...
Khan Academy
Khan Academy: Lines, Line Segments, and Rays
Explains the different characteristics of lines, line segments, and rays. [3:38]
Khan Academy
Khan Academy: Parallel & Perpendicular Lines Intro
Learn the properties of parallel and perpendicular lines so that you can easily identify them. [2:08]