To Create a Dimension That Shows the Angle Between Two Lines (AutoCAD Mechanical Toolset)
Click Home tabDimension panelPower Dimension. Find
Select the first line (1).
Select the second line(2).
Specify the dimension location (3).
Edit the dimension as required, using the settings on the Power Dimensioning ribbon contextual tab, or click Power Dimensioning tabPredefined drop-down ( Find) and select a predefined dimension text template.
Click Power Dimensioning tabClose panel Close Editor. Find