Moderate

The fact that the corner of a building thrust toward the viewer looks shorter than an inside corner thrust away from the viewer can be accounted for by the:

Correct answer: A. Muller-Lyer illusion

  • A. Muller-Lyer illusion
  • B. horizontal-vertical illusion
  • C. illusion of convergence
  • D. Ponzo illusion

Explanation

The Müller-Lyer illusion occurs when inward- and outward-pointing angles make equal lengths appear different, much like the corners of a building. The corner projecting toward the viewer is therefore perceived as shorter.

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