You can use GeoGebra
to draw circles. GeoGebra
has three built-in tools for drawing circles depending on the information you have about the circle:
GeoGebra
Instruction 1
Algebra View
and Graphics View
under View
in Menu
. Circle with Center through Point
. Graphics View
. The chosen point will be the center of the circle. Graphics View
. Distance or length
and click on the the point in the center and the point on the circular arc. The length of the radius will now be shown. The circle will now appear in Graphics View
. The equation of the circle will appear in a row in Algebra View
as well.
GeoGebra
Instruction 2
Algebra View
and Graphics View
under View
in Menu
. Circle: Center & Radius
which is the sixth button on the toolbar and the second tool in the tool list. Click on a chosen point on the Graphics View
. The chosen point will be the center of the circle. GeoGebra
will now ask you to type in the radius of the circle. Type in the radius that you want. Click on OK
. The circle will now appear in Graphics View
. The equation of the circle will appear in a row in Algebra View
as well.
Example 1
Draw a circle with a radius of 5 in GeoGebra
You choose to use Circle: Center & Radius
to draw the circle. The location of the center on the Graphics View
does not matter.
GeoGebra
Instruction 3
Algebra View
and Graphics View
under View
in Menu
. Circle through 3 Points
which is the sixth button on the toolbar and the fourth tool in the tool list. Click on the three points that you made in the previous step. The order does not matter. The circle will now appear in Graphics View
. The equation of the circle will appear in a row in Algebra View
as well.