1/28/2004   slide 28
Rule 12: Non-accidental Relations = An Object
•“If two visual structures have a non-accidental relationship, group them and assign them to a common origin.” [Hoffman 1998 p.60]
Gestalt theory of closure (shapes want to be completed/closed) firs thought to be reason—but doesn’t explain left image …

On the left the two indicated lines are parallel and therefore get grouped together
On right, circular and straight lines do not seem “non-accidental.”