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BUILT-IN MATHEMATICA SYMBOL
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 
and 
, oriented parallel to the coordinate axes.
Details
- 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
are in scaled coordinates, and the 
are in ordinary coordinates. - Circle[{x, y}, Scaled[s]] gives a circle of scaled radius s. »
- Offset[{ax, ay}] can be used to specify radii in printer's points. »
- The thickness of the circle can be specified using the Thickness directive. »
- Individual coordinates, lists of coordinates, and parameters in circles can be Dynamic objects.
- Circle[] is equivalent to Circle[{0, 0}]. »
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