Optical Illusions

| View Cart ⇗ | Info

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the lengths of lines a and b are the same. You would need to measure to be sure of your conclusion.

Keywords

geometry, optical illusion, measurement, measure, lines, lengths, illusions

Galleries

Visual Illusions

Source

C. A. Hart & Daniel D. Feldman Plane And Solid Geometry (New York: American Book Company, 1911) 21

Downloads

TIFF (full resolution)

2400×1060, 154.9 KiB

Large GIF

1024×452, 21.0 KiB

Medium GIF

640×282, 11.1 KiB

Small GIF

320×141, 4.4 KiB