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Drag the right line's endpoint to match the left line's length, then click "Submit Guess". The Müller-Lyer illusion makes identical lines appear different lengths.
Trial Results
Trial: 1
Avg Error: --
Last Error: --
Completed: 0
Müller-Lyer Illusion
Fin Angle
40°
Fin Length
45
Line Thickness
3
Submit Guess
Reveal
New Trial
3D Context