Add a Concentricity Constraint

  1. Select Sketch | Constraints | Add concentricity constraint.
  2. Select the first circle or arc. This circle or arc will keep its position.
  3. Select the second circle or arc. This circle or arc will move so that it is concentric with the first circle or arc.
  4. Add more concentricity constraints by repeating steps 2 and 3 or finish adding concentricity constraints by pressing the ESC key or the middle mouse button.