This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.

# Circle

 Circle[{x, y}, r]is a two-dimensional graphics primitive that represents a circle of radius r centered at the point x, y. Circle[{x, y}]gives a circle of radius 1. Circle[{x, y}, r, {1, 2}]gives a circular arc. Circle[{x, y}, {rx, ry}]gives an ellipse with semi-axes of lengths rx and ry, oriented parallel to the coordinate axes.
• Angles are measured in radians counterclockwise from the positive x direction.
• Circle[{x, y}, {rx, ry}, {1, 2}] yields a segment of an ellipse obtained by transforming a circular arc with the specified starting and ending angles.  »
• Scaled[{drx, dry}] or Scaled[{drx, dry}, {rx, ry}] can be used in the radius specification. The dri are in scaled coordinates, and the ri are in ordinary coordinates.
• Offset[{ax, ay}] can be used to specify radii in printer's points.  »
• The thickness of the circle can be specified using the Thickness primitive.  »
• Individual coordinates, lists of coordinates, and parameters in circles can be Dynamic objects.
A unit circle:
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A circular arc:
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An ellipse:
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Differently styled circles:
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 Scope   (13)
 Applications   (3)