How to > Advanced features and topics > Analyze > Measure > Measure angles > Measure angle between directions
  
Measure angle between directions
To measure an angle between directions
1. Click Analysis and then, in the Measure group, click the arrow next to Angle.
2. Click Angle between Directions. The Measure Output and Angle dialog boxes open.
3. In the dialog box, click on what you want to measure, or use the Direction 3D CoPilot tool.
4. You can manipulate the angle in the following ways:
◦ To reverse the first object's direction, click Rev 1st Dir.
◦ To reverse the second object's direction, click Rev 2nd Dir.
◦ To reverse the first object's direction with the second, and the second object's direction with the first, click Switch Dir.
◦ To measure the complement angle, click Complement.
The viewer updates the graphical feedback representing the angle and displays the new angle value in the Angle Output box.
5. Click to complete the operation or click Accept to use the value in an operation without closing the Angle dialog box.