How to Make a Sphere in GeoGebra
GeoGebra has two tools that can be used to draw spheres in the 3D-space:
-
If you want to draw an arbitrary sphere, choose Item 4.
-
If you know the radius and center, choose Item 4.
GeoGebra Instruction 1
Drawing a Sphere Using the Tool Sphere: Center & Point
- 1.
- Open
Algebra Viewand3D Graphicsunder
Viewin
Menu. - 2.
- Click on the tool
Sphere: Center & Point
. - 3.
- Click on a desired point in
3D Graphics. This point will be the center of the sphere. - 4.
- Decide the size of the sphere by moving the cursor toward or away from the center.
GeoGebra Instruction 2
Drawing a Sphere Using the Tool Sphere: Center & Radius
- 1.
- Open
Algebra Viewand3D Graphicsunder Viewin Menu. - 2.
- Click on the tool
Sphere: Center & Radius
. - 3.
- Click on a desired point in
3D Graphics. This point will be the center of the sphere. - 4.
-
GeoGebrawill now ask you to type in the radius of the sphere. Type in the desired radius. The sphere will now appear in3D Graphics.
Alternatively, you can type
Sphere(Point, Radius)
in Algebra View where you type in the center of the sphere in the Point field and the radius in the Radius field.
Example 1
Draw a sphere with center at (1, 3, 2) and a radius of 2
Follow Item 4 for this exercise. Type in
Sphere(Point, Radius)
in Algebra View. Then type in the values in the fields where they belong. The sphere will now appear in 3D Graphics.
