###### Asked in DefinitionsGeometry

Definitions

Geometry

# What is a perpendicular line?

## Answer

###### Wiki User

###### July 01, 2016 4:57PM

A perpendicular line is one which intersects another line at 90 degrees (or at right angles).

## Related Questions

###### Asked in Math and Arithmetic, Algebra, Geometry

### How do you work out the gradient of a perpendicular line?

basically the reciprocal of the original lines gradient is going
to be the gradient for the perpendicular line (remember the signs
should switch). For example if i had a line with the gradient of 3,
then the gradient of the perpendicular line will be -1over3. But if
the line had the gradient of -3, then the line perpendicular to
that line will have the gradient 1over3.