How to Trace the Lion on a Folded Envelope - Classic Optical Illusion Activity #1449133 (License: Personal Use)

This black-and-white line drawing demonstrates a well-known paper-folding optical illusion where a lion’s silhouette is partially obscured by vertical striped “folds.” A dashed line indicates where to fold the paper (typically an envelope), and tracing the visible contours reveals the complete lion when unfolded. The image relies on symmetry and perspective to create the illusion of a full figure emerging from partial lines.

Used in educational settings, puzzle books, and craft tutorials to teach symmetry, spatial reasoning, and creative problem-solving; ideal for classroom activities or printable at-home fun.