Constrain curve to be symmetrical

The symmetric constraint causes selected lines or curves to become symmetrically constrained about a selected line. Segments constrained to the selected geometry also reorient when the constraint is applied.

1. On the ribbon, click Sketch tab Constrain panel Symmetric .
2. Click the first line or curve.
3. Click the second line or curve.
4. Click the line of symmetry.
5. Continue to place symmetric constraints, or do one of the following to quit:
   • Right-click, and select Done.
   • Press Esc.
   • Select another command.

Show Me how to create a symmetric constraint

Note:

• If you delete the symmetry line, the symmetric constraints are also deleted.
• Selected lines and arcs are constrained about a line to create a symmetrical shape. All geometry constrained to the selected shapes also move when the constraint is applied.
• The symmetry line can be of any linetype. It must be retained in the sketch, or any symmetric constraints associated with it are deleted.