Pre-K - 2   3 - 5   6 - 8   9 - 12    Across 

Lessons  SWRs  Tools  i-Maths  Inquiry 
Search
Standards
Contact Us
Home
Interactive Math Tools

Interactive Geometry Dictionary
What Are Perpendicular Lines?

Definition of Perpendicular Lines

Two lines are perpendicular if they meet at right angles. The two lines in the applet below are perpendicular. You can drag points A, B, or P to change the lines.

Sorry, this page requires a Java-compatible web browser.

How Do You Construct Perpendicular Lines?

What Are Some Applications of Perpendicular Lines?

Back to Overview of Lines

References and Credits

 
National Council of Teachers of Mathematics Illuminating a New Vision for School Mathematics MarcoPolo Education Foundation
Illuminations is a partnership between the National Council of Teachers of Mathematics and the MarcoPolo Education Foundation
© 2000 National Council of Teachers of Mathematics
Use of this Web site constitutes acceptance of the Terms of Use
This page last updated: April 15, 2003


The mission of the National Council of Teachers of Mathematics is to provide the vision and leadership necessary to ensure a mathematics education of the highest quality for all students. The NCTM Illuminations Web site is devoted to providing Internet resources to improve the teaching and learning of mathematics in grades pre-K through 12. The views expressed or implied on this Web site, unless otherwise noted, should not be interpreted as official positions of the Council.