Where is the Zig-zag?
Photo by Kevin Gordon, obtained from Wikimedia Commons, https://commons.wikimedia.org/wiki/Category:Zigzags#/media/File:Zig-Zags_-_geograph.org.uk_-_1161095.jpg As this cleverly-captured image demonstrates, we find zig-zag or alternating patterns all around us. They can be used to warn – of an approaching pedestrian crossing as part of road safety. They can be used to improve stability, in structures such as fences or screens. Zig-zags …