Mathematicians use notation for efficiency, so make your classes more efficient! The instructor explains the definition and notation for key elements of geometry such as points, lines, and planes. This is the 37th lesson is a series of...

Defining the undefined is the goal of this video. The instructor explains the important features of a point, line, and plane and how they work together. He also addresses the correct ways to name each and describes the correct notation —...

A point is an exact location in space. This tutorial defines the concept of a point as it occurs in graphing, geometry, and algebra. A variety of examples are used to show how important points are and where they'll be seen in the world...

This video tutorial investigates cross sections of geometric solids and provides examples of the drawings. Students can check their understanding with an assessment. [4:21]

In this video lesson, students use a coordinate plane to determine what happens when two more planes intersect. [2:26]

Simon Bahr, an engineer at The Boeing Company, explains lift and describes the safety testing that planes go through before they are allowed to fly. Bahr relates lift to the sensation you feel when you stick a hand out the window of a...

In a three-dimensional space, a plane can be defined by three points it contains, as long as those points are not on the same line. Learn more about it in this video.

Determine whether planes will intersect or will not intersect in this video lesson.Check your understanding with a quick assessment. [3:27]