Lines that are parallel have a very special quality. Without this quality, these lines are not parallel. In this tutorial, take a look at parallel lines and see how they are different from any other kind of lines!

Keywords:

definition

parallel

parallel line

parallel lines

intersect

intersecting lines

intersection

plane

same plane

never intersect

don't intersect

do not intersect

no intersection

Background Tutorials

Distinguish between undefined terms, definitions, postulates, conjectures, and theorems

A point is a fundamental building block of math. Without points, you couldn't make lines, planes, angles, or polygons. That also means that graphing would be impossible. Needless to say, learning about points is very important! That makes this tutorial a must see!

You can't learn everything about math without seeing planes. Did you know that there are rules for naming a plane? This tutorial introduces you to planes and shows you how to name them. Take a look!

Further Exploration

Derive and use the distance, slope, and midpoint formulas to verify geometric relationships, including congruence of segments and parallelism or perpendicularity of pairs of lines