Difference between revisions of "Circle Command"

From GeoGebra Manual
Jump to: navigation, search
m (changed formatting)
m (Formatting)
Line 1: Line 1:
 
<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.
<dl>
+
; 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.
<dt>Circle[Point M, Number r]</dt>
+
; Circle[Point A, Point B, Point C] : Yields a circle through the given points A, B and C.
<dd>Yields a circle with midpoint M and radius r.</dd>
 
 
 
<dt>Circle[Point M, Segment]</dt>
 
<dd>Yields a circle with midpoint M whose radius is equal to the length of the given segment.</dd>
 
 
 
<dt>Circle[Point M, Point A]</dt>
 
<dd>Yields a circle with midpoint M through point A. </dd>
 
 
 
<dt>Circle[Point A, Point B, Point C]</dt>
 
<dd>Yields a circle through the given points A, B and C.</dd>
 
 
 
</dl>
 
  
 
'''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]],  [[Circle with Center through Point Tool]],  [[Circle with Center and Radius Tool]], and  [[Circle through Three Points Tool]]

Revision as of 15:11, 3 July 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 Tool, Circle with Center through Point Tool, Circle with Center and Radius Tool, and Circle through Three Points Tool

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