JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. To Interactively Lock the Angle of a Dynamic Element In the AccuDraw window's Angle field (Polar coordinates), type the angle, in degrees. The pending data point is constrained automatically, as indicated by the pressed Angle button. Dynamic update occurs in response to each keystroke. Parent topic: AccuDraw's Shortcut Key-ins