Looking for FCF GD&T dimensions? If so, see:
Dimension Perpendicularity dialog box
The Insert | Dimension | Perpendicularity menu option measures the perpendicularity between two features. The second feature is always the datum feature. When only one feature is selected, the current workplane becomes the datum feature. This dimension type is considered one sided, meaning a single positive value tolerance is applied.
More:
To Dimension a Feature Using the PERPENDICULARITY Option: