Symmetry lines are used to indicate an axis of symmetry when a partial view is shown. Symmetry lines pairs of short parallel lines located on the ends of the centerline that defines the axis of symmetry.
![](https://engineeringtechnology.org/wp-content/uploads/2023/05/Symmetry-2-1129x600.png)
Symmetry lines are used to indicate an axis of symmetry when a partial view is shown. Symmetry lines pairs of short parallel lines located on the ends of the centerline that defines the axis of symmetry.