Which Gestalt principle best explains our perception of reversible figures such as the two silhouetted faces/vase figure

Question

Quizplus · Accepted Answer

Figure-ground
 The figure-ground principle states that we tend to separate the background from the foreground in a visual scene. In the case of the reversible figures such as the two silhouetted faces/vase figure, our perception alternates between seeing either the faces or the vase as the figure and the other as the background. So, this phenomenon can be explained by the figure-ground principle.

Which Gestalt Principle Best Explains Our Perception of Reversible Figures