|Keyboard Shortcut||Menu Shortcut||Menu Location|
|A||Alt+C, 3||Vector ->Arc (3-Point)|
This Arc command draws an arc based on three points set by the user.
Activate the Arc (3-Point) command. Set a point for the beginning of the arc, a second point that the arc passes through, and a third point for the end of the arc. The tool remains active and awaiting points for another arc.
Use the Ctrl key to constrain the next point to be along a vertical line from the last point set. Use the Shift key to force the next point to be along a horizontal line from the last point. The first point in a new curve cannot be constrained by Ctrl or Shift.)
Use the Esc key to erase the previous point in the arc currently being created.
Use Gravity to snap to the existing point in the vector data that is closest to the cursor’s position. Gravity may be activated in two ways – press the Period (.) key, or right-click to activate the Context menu and choose Gravity. If selected from the context menu, right-click will continue to function as Gravity until a new tool is selected.