# How to Find a Line Perpendicular to Another?

Two lines are perpendicular to one another if they intersect each other in the shape of a "t" to form a 90-degree angle. A line that is perpendicular to another has a slope that is negative and rec...
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http://www.ehow.com/how_8338889_line-perpendicular-another.html

## How to Find a Perpendicular Line?

If a line intersects another line at a 90-degree angle, they are perpendicular. You may have to find a perpendicular line as a part of a high school or college algebra or geometry course. You also ...
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http://www.ehow.com/how_8274592_perpendicular-line.html

## How to Find the Perpendicular Line to a Vector?

Vectors are lines with direction and magnitude, and are a concept most commonly used in calculus and physics. If you want to find a line perpendicular to a vector, you need a line whose slope multi...
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http://www.ehow.com/how_8439289_perpendicular-line-vector.html

## How to Find a Line Perpendicular to a Plane?

A plane is an endless, flat, 2-dimensional surface. If a line is not parallel to the plane or located on it, then it must intersect at some point. One type of intersection is at a right angle, whic...
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http://www.ehow.com/how_8198435_line-perpendicular-plane.html

## How to Give the Slope of a Line Perpendicular to the Line?

In basic algebra, two lines are said to be perpendicular if they intersect each other at right angles. Calculate the slope of a line perpendicular to another line by determining the slope of the or...
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http://www.ehow.com/how_8361119_give-slope-line-perpendicular-line.html