RigidPolygon Command

RigidPolygon( <Polygon> )

Creates a copy of any polygon that can only be translated by dragging its first vertex and rotated by dragging its second vertex.

RigidPolygon( <Polygon>, <Offset x>, <Offset y> )

Creates a copy of any polygon with the given offset that can only be translated by dragging its first vertex and rotated by dragging its second vertex.

RigidPolygon( <Free Point>, ..., <Free Point> )

Creates polygon whose shape cannot be changed. This polygon can be translated by dragging its first vertex and rotated by dragging its second vertex.

Note: The copy will join in every change of the original polygon.
If you want to change the shape of the copy, you have to change the original.