Tangent and perpendicular line
To create a line tangent or perpendicular to a path, select the Tangent & Perpendicular Line tool and position the cursor over the path where you want the line to start. When the cursor appears, click and drag in the direction you want the line to appear. The line will constrain to tangent or perpendicular angles to the path.



To view tangent and perpendicular measurements while dragging, make sure you have checked Show info while dragging in the CADtracker panel. Click once on a path without dragging to access the numeric input dialog box to numerically create tangent or perpendicular lines.