How is a Geometry/Primitive precisely rotated?

Select Geometry (Primitive in model), select Properties Tab (on right panel), move cursor focus to X, Y, or Z Rotation values (click the value field), enter new value or use up/down arrow keys to increase/decrease rotation value in one degree increments. Free Draw and Multi-Level Visual Aid objects are a series of individual points and are rotated in the Object Properties tab (top of application window).