A zigzag is a pattern mae up of small corners at variable angles, though constant within the zigzag, tracing a path between two parallel lines; it can be described as both jagged and fairly regular. From the point of view of symmetry, a regular zigzag can be generated from a simple motif like a line segment by repeated application of a glide reflection. Equally it is the juxtaposition of chevrons, or of forward slashes and backslashes: