Difference between revisions of "Circle Command"
From GeoGebra Manual
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{{Note| See also [[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]] tools.}} | {{Note| See also [[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]] tools.}} | ||
+ | {{betamanual|version=5.0| | ||
+ | {{Note|1=From GeoGebra 5, this command will work with 3D objects as well}} | ||
+ | }} |
Revision as of 18:38, 8 June 2012
- Circle[Point M, Number r]
- Yields a circle with center M and radius r.
- Circle[Point M, Segment]
- Yields a circle with center M and radius equal to the length of the given segment.
- Circle[Point M, Point A]
- Yields a circle with center M through point A.
- Circle[Point A, Point B, Point C]
- Yields a circle through the given points A, B and C.
Note: See also Compass, Circle with Center through Point, Circle with Center and Radius, and Circle through Three Points tools.
Following text is about a feature that is supported only in GeoGebra 5.0.
Note: From GeoGebra 5, this command will work with 3D objects as well |
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.