Construction Aid Circle Arc > Concentric to Circle Part (Construct Menu)

This command draws a Construction Aid circle arc which runs concentric to another circle arc. After identifying the other circle arc, the arc is determined by entering its radius.

If a Construction Aid circle arc is to be drawn while working in isometric or dimetric view, then the command Construction Aid Ellipse Arc > Vector - Vector must be used, because the result on the page is elliptical not circular.

Any circle part which exists independently or within other objects can be identified as a reference object. This can also be the arc of a circle segment or a circle arc within a surface.

The radius of the Construction Aid arc can be entered by clicking the mouse anywhere in the drawing at a point through which the arc should run.

The start and end angle as well as the arc direction are taken from the reference circle part.

The arc direction settings of existing arcs are not affected by changes to the current arc direction. To change the arc direction of an existing arc, use the command Transform Object to > Invert.