Parallel

Perpendicular

• Parallelogram Definition
• Parallel

It just means at right angles (90°) to.

The red line is perpendicular to the blue line:

Definition of Parallel Lines explained with real life illustrated examples. Also learn the facts to easily understand math glossary with fun math worksheet online at SplashLearn. SplashLearn is an award winning math learning program used by more than 40 Million kids for fun math practice. Likewise, parallel lines become perpendicular when one line is rotated 90°. Parallel Curves. Curves can also be parallel when they keep the same distance apart (called 'equidistant'), like railroad tracks. The red curve is parallel to the blue curve in both these cases. Parallel Search by Casetext. Smith's subpar job performance was the reason for his termination as shown by the numerous written warnings, not discrimination. Search Search using this query.

Here also:

(The little box drawn in the corner, means 'at right angles', so we didn't really need to also show that it was 90°, but we just wanted to!)

Try for yourself:

Parallel

Lines are parallel if they are always the same distance apart (called 'equidistant'), and will never meet. (They also point in the same direction). Just remember:

Always the same distance apart and never touching.

The red line and blue line are parallel in both these examples:

Try it yourself:

Perpendicular to Parallel

Question: What is the difference between perpendicular and parallel?
Answer: 90 degrees (a right angle)

That's right, when we rotate a perpendicular line by 90° it becomes parallel (but not if it touches!)

Perpendicular ...	... Parallel !

Likewise, parallel lines become perpendicular when one line is rotated 90°.

Parallel Curves

Curves can also be parallel when they keep the same distance apart (called 'equidistant'), like railroad tracks.

The red curve is parallel to the blue curve in both these cases:

Parallelogram Definition

Parallel Surfaces

Surfaces can also be parallel, like this:

Lines and Planes

Parallel

Advanced Topic: You can also learn about Parallel and Perpendicular Lines and Planes