The Ponzo illusion where two equally sized squares look to be different sizes because of their position relative to the other elements of the figure is an example of this monocular depth cue.
A) linear perspective
B) size constancy
C) interposition
D) relative size

Question

Quizplus · Accepted Answer

The Ponzo illusion is an example of linear perspective, where objects that are farther away appear smaller and closer objects appear larger. The converging lines in the drawing create an illusion of depth and distance, which affects our perception of size.

The Ponzo Illusion Where Two Equally Sized Squares Look to Be