Difference between revisions of "Circle Command"
From GeoGebra Manual
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| − | ; 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.
