Geometric Optical IllusionsIt defies logic! At least, that's what puzzle-doers will think as they work their way through this largest-ever compendium of geometric conundrums. When you look at these images--some classic, others never-before published--you'll have a hard time believing what the captions say about their size, shape, or other geometric aspect. For example, two tables appear radically different to the naked eye--but they're actually identical in size and shape. It's all a matter of perspective and perception. Each puzzle is eye-opening. |
Common terms and phrases
Al Seckel appear misaligned appear to bend appears larger balls appear Box Illusion Café Check your answer Deforming Square Distorted Square dot appear edges to define Estimation Illusion horizontal and vertical horizontal lines Illusion Move Illusion of Extent Illusion Which colored Illusion Which line image slowly Judd Illusion Line Illusion line segments appear lines are straight lines intersect Lotto's Perspective Illusion Louis Arch Misaligned Dots Moon Illusion Move this image Müller-Lyer OPTICAL ILLUSIONS perceive a spiral perfect circles perfect square Pinna's Poggendorf Illusion Ponzo Illusion Purves and Lotto's red line appear ruler Seckel segment is longer squares appear distorted Stack of Coins straight and parallel straightedge Stretched Heads Striped Bars Illusion Terra Subterranea Tilt Induction Effect Tilted Houses Tolansky's Curvature Illusion Top Hat Illusion Trapezoid Illusion triangle Twisted Circle Illusion Twisted Cord Illusion vertical lines appear Wade's Spiral Wilcox's Twisted Circle Wundt Blocks Illusion Wundt Illusion Wundt's Illusion Zöllner Illusion ㅁㅁㅁ