# Difference between revisions of "Circle Command"

From GeoGebra Manual

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<noinclude>{{Manual Page}}[[Category:Manual (official)]]</noinclude> | <noinclude>{{Manual Page}}[[Category:Manual (official)]]</noinclude> | ||

− | ; Circle[Point M, Number r] : Yields a circle with midpoint M and radius r. | + | ; Circle[Point M, Number r] : Yields a circle with midpoint ''M'' and radius ''r''. |

− | ; Circle[Point M, Segment] : Yields a circle with midpoint M whose radius is equal to the length of the given segment. | + | ; Circle[Point M, Segment] : Yields a circle with midpoint ''M'' whose radius is equal to the length of the given segment. |

− | ; Circle[Point M, Point A] : Yields a circle with midpoint M through point A. | + | ; Circle[Point M, Point A] : Yields a circle with midpoint ''M'' through point ''A''. |

− | ; Circle[Point A, Point B, Point C] : Yields a circle through the given points A, B and C. | + | ; Circle[Point A, Point B, Point C] : Yields a circle through the given points ''A'', ''B'' and ''C''. |

− | '''Note:''' Also see tools [[Compass Tool]], [[Circle with Center through Point Tool]], [[Circle with Center and Radius Tool]], and [[Circle through Three Points Tool]] | + | '''Note:''' Also see tools [[Compass Tool|Compass]], [[Circle with Center through Point Tool|Circle with Center through Point]], [[Circle with Center and Radius Tool|Circle with Center and Radius]], and [[Circle through Three Points Tool|Circle through Three Points]]. |

## Revision as of 19:09, 17 October 2009

- Circle[Point M, Number r]
- Yields a circle with midpoint
*M*and radius*r*. - Circle[Point M, Segment]
- Yields a circle with midpoint
*M*whose radius is equal to the length of the given segment. - Circle[Point M, Point A]
- Yields a circle with midpoint
*M*through point*A*. - Circle[Point A, Point B, Point C]
- Yields a circle through the given points
*A*,*B*and*C*.

**Note:** Also see tools Compass, Circle with Center through Point, Circle with Center and Radius, and Circle through Three Points.

## Comments

## Tips[edit]

### Use circles to fix the distance between two objects[edit]

Circles are a great way to make the distance between two objects constant: If there are two points *A* and *B* on two lines *g* (point *A*) and *h* (point *B*) where *A* can be moved and *B* should have the constant distance *r* to *A* you can define *B* as the intersection between the line *h* and the circle around *A* with the radius *r*. As a circle intersects a line at two points (in case it's not tangetial or passing by) you have to hide & ignore the second intersection.