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)

2400×613, 238.6 KiB

Large GIF

1024×261, 22.3 KiB

Medium GIF

640×163, 12.7 KiB

Small GIF

320×81, 4.8 KiB