You can change the direction measuring system and angular units the editing tools use on the Units tab of the Editing Options dialog box.
- Click the Editor menu and click Options.
- Click the Units tab.
- Click the Direction Type drop-down arrow and choose a direction measuring system.
- Click the Direction Units drop-down arrow and click the type of direction measurement unit you want to use.
- Type the number of decimal places used when displaying angles.
- Click OK.