Add a Concentricity Constraint

General

• A concentricity constraint can be added to circles, arcs and points.
• In sketch geometry, the symbol for the concentricity constraint is two nested circles .
  • You can use the F9 key to show and hide the symbols of the constraints.

Add a concentricity constraint in a plane sketch

1. Select the function Sketch | Constraints | Add concentricity constraint.
2. Click the first circle, arc or point.
   • This circle or arc shall will remain in place unless the element shown below is bound in place with constraints.
3. Click the second circle, arc or point.
   • This circle, arc or point will move so that it is concentric with the first circle, arc or point.
   • If the last-clicked element is locked in place with constraints, the first-clicked element will move so that it is concentric with the second circle, arc or point.
4. Repeat steps 2 and 3 to add new concentricity constraints
5. Stop adding concentricity constraints
   • Select another function or
   • press the V key or
   • press the Esc key or
   • click the middle mouse button.