Arc
After entering at least one point while measuring continuous lengths or areas, press the Arc button on the toolbar or select the Arc command from the Edit Menu or the Popup Menu. The arc command can a
After entering at least one point while measuring continuous lengths or areas, press the Arc button 
on the toolbar or select the Arc command from the Edit Menu or the Popup Menu. The arc command can also be assigned a shortcut key. By default this action is assigned to Ctrl+Alt+A.
The last point entered will become the first end of the arc. After selecting the Arc command, click on a point near the middle of the arc and then the second end point of the arc to draw the curved line.
Arcs can be linked. The last point of one arc can be the first point of another arc.
The arc line is not drawn until the last point is entered.
on the toolbar or select the Arc command from the Edit Menu or the Popup Menu. The arc command can also be assigned a shortcut key. By default this action is assigned to Ctrl+Alt+A.The last point entered will become the first end of the arc. After selecting the Arc command, click on a point near the middle of the arc and then the second end point of the arc to draw the curved line.
Arcs can be linked. The last point of one arc can be the first point of another arc.
The arc line is not drawn until the last point is entered.