Web Results

Perpendicular

en.wikipedia.org/wiki/Perpendicular

If two lines (a and b) are both perpendicular to a third line (c), all of the angles formed along the third line are right ...

Perpendicular lines from equation | Equations of parallel and ...

www.khanacademy.org/math/geometry-home/analytic-geometry-topic/parallel-and-perpendicular/v/perpendicular-lines

Sal determines which pairs out of a few given linear equations are perpendicular.

Parallel & perpendicular lines - introduction | Parallel and ...

www.khanacademy.org/math/basic-geo/basic-geo-lines/parallel-perp/v/parallel-and-perpendicular-lines-intro

Parallel lines never intersect, and perpendicular lines intersect at a 90 degree angle. Learn how to tell parallel and perpendicular lines apart.

Parallel & perpendicular lines - introduction - Khan Academy

www.khanacademy.org/math/basic-geo/basic-geo-angles/basic-geo-interpreting-angles/v/parallel-and-perpendicular-lines-intro

Parallel lines never intersect, and perpendicular lines intersect at a 90 degree angle. Learn how to tell parallel and perpendicular lines apart.

Perpendicular Lines 1 | Coolmath.com

www.coolmath.com/algebra/08-lines/14-perpendicular-lines-01

Let's graph these lines: * I'm using y = mx + b stuff to graph them!

Slope: Parallel and Perpendicular Lines - Purplemath

www.purplemath.com/modules/slope2.htm

Demonstrates how to determine if slopes are parallel, perpendicular, or neither. Explains why graphing is not generally helpful for this type of question.

Definition of Perpendicular Lines - Math is Fun

www.mathsisfun.com/definitions/perpendicular-lines.html

Perpendicular Lines. more ... Perpendicular Lines. Lines that are at right angles ( 90°) to each other. Try for yourself: See: Parallel Lines. Next.

Finding Parallel and Perpendicular Lines - Math is Fun

www.mathsisfun.com/algebra/line-parallel-perpendicular.html

Parallel and Perpendicular Lines. How to use Algebra to find parallel and perpendicular lines. Parallel Lines. How do we know when two lines are parallel ?

Perpendicular lines. (Coordinate Geometry) - Math Open Reference

www.mathopenref.com/coordperpendicular.html

When two lines are perpendicular to each other (at right angles or 90°), their slopes have a particular relationship to each other. If the slope of one line is m then ...

Perpendicular and Parallel - Math is Fun

www.mathsisfun.com/perpendicular-parallel.html

Perpendicular and Parallel. Perpendicular. It just means at right angles (90°) to. The red line is perpendicular to the blue line in both these cases: ...

Answers
What Are Perpendicular Lines?
In mathematics, a line is an infinitely long one-dimensional object. It has no start or end, continuing on forever without ever changing direction. More colloquially, a "line" is any straight object, even if it does have an end point. The relationship... More »
Difficulty: Easy
Source: www.ehow.com