JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Perpendicular 2D Constraint Used to apply perpendicular constraint between two linear segments or entities. You can access this tool from the following: Ribbon: Drawing > Constraints > 2D Toolbox: 2D Constraint Tools Key-in: CONSTRAINT2D CREATE PERPENDICULAR2D To Apply a Perpendicular 2D Constraint Parent topic: Applying Constraints