[page:Object3D] → [page:Line] → [page:LineSegments] →

# [name]

An axis object to visualize the 3 axes in a simple way.
The X axis is red. The Y axis is green. The Z axis is blue.

## Example

[example:webgl_geometries WebGL / geometries]
[example:webgl_geometry_convex WebGL / geometry / convex]
[example:webgl_geometry_spline_editor WebGL / geometry / spline / editor]
`var axesHelper = new THREE.AxesHelper( 5 ); scene.add( axesHelper );`

## Constructor

### [name]( [param:Number size] )

[page:Number size] -- (optional) size of the lines representing the axes. Default is *1*.

## Properties

See the base [page:LineSegments] class for common properties.

## Methods

See the base [page:LineSegments] class for common methods.

## Source

[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]