# Wolfram Language & System 11.0 (2016)|Legacy Documentation

This is documentation for an earlier version of the Wolfram Language.
BUILT-IN WOLFRAM LANGUAGE SYMBOL

# Disk

Disk[{x,y},r]
represents a disk of radius r centered at {x,y}.

Disk[{x,y}]
gives a disk of radius 1.

Disk[{x,y},{rx,ry}]
gives an axis-aligned elliptical disk with semiaxes lengths rx and ry.

Disk[{x,y},,{θ1,θ2}]
gives a sector of a disk from angle θ1 to θ2.

## DetailsDetails

• Disk can be used as a geometric region and a graphics primitive.
• Disk[] is equivalent to Disk[{0,0}]. »
• Disk represents the filled region .
• Angles are measured in radians counterclockwise from the positive x direction.
• Disk can be used in Graphics.
• In graphics, the points {xi,yi} can be Scaled, Offset, ImageScaled, and Dynamic expressions.
• Graphics rendering is affected by directives such as FaceForm, EdgeForm, and color.

## ExamplesExamplesopen allclose all

### Basic Examples  (5)Basic Examples  (5)

A unit disk:

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A disk sector:

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An elliptical disk:

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Differently styled unit disks:

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Get the Area of a disk:

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The area of an ellipse:

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## See AlsoSee Also

Introduced in 1991
(2.0)
| Updated in 2014
(10.0)