Creating a Relative Coordinate System

When creating a relative CS, you have the following options:

• Create an offset relative CS, that is, a relative CS whose origin lies a specified distance from another CS’s origin. By moving a CS’s origin, you can enter coordinates relative to an existing object, without having to add or subtract the existing object’s coordinates.
• Create a rotated relative CS, that is, a relative CS whose axes are rotated away from another CS’s axes. By rotating the axes of a CS, you can easily add an object that is turned at an angle relative to another object.
• Create a relative CS that is both offset and rotated.