Sphere
The sphere icon produces a full sphere in which you can also adjust
the number of segments both vertically and horizontally.
To
Create:
In a viewport, click and drag to define the spheres radius. As
you drag the sphere sizes pivoting around the center point and
the mouse being the extent of the radius. Release the mouse when
sized appropriately.
Vertical Slices: Sets the number of polygonal slices the the sphere will contain vertically. More faces produces a smoother sphere
Horizontal Slices: Sets the number of polygonal slices the the sphere will contain Horizontally. More faces produces a smoother sphere.