zigzags

A zigzag is a pattern formed by a sequence of connected straight line segments that alternately change direction, creating sharp turns. The turns may be at 45 or 90 degrees, but any alternating sequence of directions qualifies. Zigzags are two-dimensional patterns, though similar ideas can appear on three-dimensional surfaces.

The term derives from the two onomatopoeic syllables 'zig' and 'zag' and is used in English for a wide range of contexts where direction switches are evident, from geometry to decoration.

In design and textiles, zigzags are common motifs in fabrics, tiling, and graphic art; a zigzag stitch is a common sewing technique that helps prevent fabric fraying.

In media and technology, the zigzag pattern appears in JPEG image compression as the zigzag scan that orders coefficients, and in computer graphics as a simple polyline approximation of curves.

In transportation and civil engineering, zigzag patterns appear as switchback roads to traverse steep terrain or to slow traffic. In nature, zigzag markings and silhouettes occur in some animal coats and plant patterns.

Zigzags also appear as decorative motifs in architecture and art, notably in Art Deco design.