Difference between revisions of "Circle Command"

From GeoGebra Manual
Jump to: navigation, search
Line 1: Line 1:
 
<noinclude>{{Manual Page|version=4.0}}[[Category:Manual (official)|{{PAGENAME}}]]</noinclude>
 
<noinclude>{{Manual Page|version=4.0}}[[Category:Manual (official)|{{PAGENAME}}]]</noinclude>
 
{{command|conic}}
 
{{command|conic}}
; Circle[Point M, Number r] : Yields a circle with center ''M'' and radius ''r''.
+
;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>, <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 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''.
+
;Circle[ <Point A>, <Point B>, <Point C> ]:Yields a circle through the given points ''A'', ''B'' and ''C''.
  
{{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|1=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|
+
{{betamanual|version=5.0|{{Note|1=From GeoGebra 5, this command will work in 3D with 3D Points as well}}
{{Note|1=From GeoGebra 5, this command will work in 3D with 3D Points as well}}
 
 
}}
 
}}

Revision as of 07:54, 21 November 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.

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.

An illustration of the described technique to fix the distance between two points A and B1
© 2022 International GeoGebra Institute