A zigzag is a pattern like a row of Ws joined together, consisting of a single line made up of line segments of usually constant length joined by usually constant angles in alternating directions.
In geometry, this pattern is described as a skew apeirogon. 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.
Although the origin of the word is unclear, its first printed appearances were in French-language books and ephemera of the late 17th century.[1]
Examples of zigzags
edit- In civil engineering, a switchback is a technique used since antiquity — in places including Machu Picchu — to build a road or path along steep terrain by zigzagging laterally across a slope.[2]
- The trace of a triangle wave or a sawtooth wave is a zigzag.
- Pinking shears are designed to cut cloth or paper with a zigzag edge, to lessen fraying.[3]
- In sewing, a zigzag stitch is a machine stitch in a zigzag pattern.[4]
- The zigzag arch is an architectural embellishment used in Islamic, Byzantine, Norman and Romanesque architecture.[5][6]
- In seismology, earthquakes recorded in a "zigzag line" form by using seismograph.[7]
See also
editReferences
edit- ↑ Liberman, Anatoly (2009). Word Origins...And How We Know Them: Etymology for Everyone. Oxford University Press, USA. ISBN 978-0-19-538707-0.
- ↑ DesMarais, Max. "What Is a Switchback? History of Switchbacks in Hiking Trails". My Outdoor Base Camp. Retrieved March 28, 2026.
- ↑ Shepler, Missy; Brent, Rebecca (2011). The Complete Idiot's Guide to Sewing. Penguin. p. 84. ISBN 978-1-101-51368-2.
- ↑ Gardiner, Wendy; Knight, Lorna (2011). The Sewing Machine Accessory Bible: Get the Most Out of Your Machine---From Using Basic Feet to Mastering Specialty Feet. Macmillan. pp. 34–35. ISBN 978-0-312-67658-2.
- ↑ Allen, Terry (1986). "4". A Classical Revival in Islamic Architecture. Wiesbaden.
{{cite book}}: CS1 maint: location missing publisher (link) - ↑ Allen, Terry (2008). Pisa and the Dome of the Rock (electronic publication) (2nd ed.). Occidental, California: Solipsist Press. ISBN 978-0-944940-08-2. Retrieved January 28, 2012.
- ↑ "Seismograph - What is a seismograph?". SMS-Tsunami-Warning.com. Retrieved 8 January 2023.
Bibliography
edit- Wedgwood, Hensleigh (1855). "On Roots mutually connected by reference to the term Zig-zag". Transactions of the Philological Society (2).
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