Virtual Nerd: What Are Intersecting Lines?

Lines that are parallel have a very special quality. This tutorial takes a look at parallel lines and how they are different from other types of lines. [4:06]

The angles formed by perpendicular lines will always be the same. Take a look at this tutorial to learn about perpendicular lines and see a special trick involving them. [5:22]

This video tutorial introduces skew lines which are two lines that do not intersect and are not parallel. [3:46]

Gain information about horizontal lines including their slope and what the equation of a horizontal line looks like. [3:44]

Perpendicular lines intersect to form right angles - four of them to be exact. Vertical angles, congruent angles, 90 degrees each, these are some of the special properties of perpendicular lines. Watch this video to find out a couple...

All vertical lines have the same slope. Watch this tutorial to learn all about vertical lines including their slope and what the equation of a vertical line looks like. [4:30]

Vertical angles are always congruent to one another. Take a look at this tutorial to learn about and see how to identify vertical angles. [4:07]

What makes vertical angles so special? Here's a few words that might help you figure out why: intersecting lines, congruent angles, opposite, supplementary angles. Still wondering? Then watch this video for a good explanation of vertical...

Using the vertical line test, you can figure out if a graph is a function or not. Watch this tutorial to learn about the test. [3:30]

What kind of lines have equal slopes, equal incline or decline, and equal rise over run? Yes! Parallel lines. What are parallel lines? They are lines on a graph that go on and on and on forever and never touch each other. Watch this...