Share Email Facebook Twitter LinkedIn To Join Objects Click Home tabModify panelJoin. Find Select a source object or select multiple objects to join together. Valid objects include lines, arcs, elliptical arcs, polylines, 3D polylines, and splines. Related Concepts About Breaking and Joining Objects Related Tasks To Join Polylines, Splines, Lines, and Arcs Into a Single PolylineTo Break an Object Related Reference Commands for Removing Objects and Correcting Mistakes