Difference between revisions of "Circle Command"
From GeoGebra Manual
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{{Note|1=See also [[Image:Tool_Compasses.gif]] [[Compass Tool|Compass]], [[Image:Tool_Circle_Center_Point.gif]] [[Circle with Center through Point Tool|Circle with Center through Point]], [[Image:Tool_Circle_Center_Radius.gif]] [[Circle with Center and Radius Tool|Circle with Center and Radius]], and [[Image:Tool_Circle_3Points.gif]] [[Circle through 3 Points Tool|Circle through 3 Points]] tools.}} | {{Note|1=See also [[Image:Tool_Compasses.gif]] [[Compass Tool|Compass]], [[Image:Tool_Circle_Center_Point.gif]] [[Circle with Center through Point Tool|Circle with Center through Point]], [[Image:Tool_Circle_Center_Radius.gif]] [[Circle with Center and Radius Tool|Circle with Center and Radius]], and [[Image:Tool_Circle_3Points.gif]] [[Circle through 3 Points Tool|Circle through 3 Points]] tools.}} | ||
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;Circle[ <Line>, <Point> ] | ;Circle[ <Line>, <Point> ] | ||
:Creates a circle with line as axis and through the point. | :Creates a circle with line as axis and through the point. | ||
Revision as of 09:43, 29 July 2015
- Circle[ <Point>, <Radius Number> ]
- Yields a circle with given center and radius.
- Circle[ <Point>, <Segment> ]
- Yields a circle with given center and radius equal to the length of the given segment.
- Circle[ <Point>, <Point> ]
- Yields a circle with given center through a given point.
- Circle[ <Point>, <Point>, <Point> ]
- Yields a circle through the three given points (if they do not lie on the same line).
Note: See also 
Compass, 
Circle with Center through Point, 
Circle with Center and Radius, and 
Circle through 3 Points tools.
Compass, 
Circle with Center through Point, 
Circle with Center and Radius, and 
Circle through 3 Points tools.- Circle[ <Line>, <Point> ]
- Creates a circle with line as axis and through the point.
- Circle[ <Point>, <Radius>, <Direction> ]
- Creates a circle with center, radius, and axis parallel to direction, which can be a line, vector or plane.
- Example:
Circle[ <Point>, <Radius>, <Plane> ]yields a circle parallel to the plane and with perpendicular vector of the plane as axis.
- Circle[ <Point>, <Point>, <Direction> ]
- Creates a circle with center, through a point, and axis parallel to direction.
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.
