Show or Hide Geometry Constraints of a Sketch
General
- Geometric constraints are displayed as dimension constraint or graphical symbols between elements.
- The dimension constraint or symbol indicates that there is a geometric constraint between the elements.
- Other than the dimension constraints can be hidden and displayed again, if necessary.
- The size of the constraint symbols is determined by the sketch properties setting Sketch scale.- We recommend to select Auto as the sketch scale.
 
- The dimension constraints are always visible. The dimension constraint is highlighted in blue when the geometric constraint is in effect. 
Show or hide the constraints
- Press the F9 key to toggle the visibility of the graphical symbols.
- Select the setting File >  User Preferences > Drawings, Models on the View tab in the Common group User Preferences > Drawings, Models on the View tab in the Common group Show constraints: The constraints are visible. Show constraints: The constraints are visible.
 Show constraints: The constraints are not visible. Show constraints: The constraints are not visible.
 
Graphical Symbols of Constraints
| Meaning | Symbol | 
| Center |  | 
| Perpendicular |  | 
| Equal distance |  | 
| Equal radius |  | 
| Concentric |  | 
| Symmetrical |  | 
| Tangential |  | 
| Parallel |  | 
| Direction |  | 
| Coincident | There is no symbol for the constraint | 
Overdefined, unsolved constraint is highlighted in red color.

Select a constraint to edit or delete
- Select the constraint either- From the list of constraints or
- Select the symbol of the constraint in the graphics window.
 
 You can select a tangential constraint in the graphics window when you deselect Snap to Line on the tool strip. You can select a tangential constraint in the graphics window when you deselect Snap to Line on the tool strip.
