« index/indices | Main | pascal’s triangle »


A normal is a straight line that is perpendicular to a curve or other straight line.

For example, the red line in the graph below is normal to the curve y = x2 at the point (1,1). Note that it is not normal to the curve at the other point of intersection.

Reader Comments

There are no comments for this journal entry. To create a new comment, use the form below.

PostPost a New Comment

Enter your information below to add a new comment.
Author Email (optional):
Author URL (optional):
Some HTML allowed: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <code> <em> <i> <strike> <strong>