:Polygonal masonry

{{Short description|Masonry comprising stones with over 4 face angles}}

File:Cusco Piedra de los doce angulos.jpg, Hatunrumiyoc street, Cusco, Peru]]

Polygonal masonry consists of stones that have five or more face angles, in contrast to Ashlar blocks which have four rectangular ones.{{cite book |author=G.R.H. Wright |url=https://books.google.com/books?id=CQHsKG6g5zwC&pg=PA154 |title=Ancient Building Technology, Volume 3: Construction (2 Vols) |date=23 November 2009 |publisher=BRILL |isbn=90-04-17745-0 |pages=154–}}

In Greece, Cyclopean masonry was the first type of polygonal masonry.{{cite book|author=Carmelo G. Malacrino|title=Constructing the Ancient World: Architectural Techniques of the Greeks and Romans|url=https://books.google.com/books?id=5Gfk34wJ8-kC&pg=PA97|year=2010|publisher=Getty Publications|isbn=978-1-60606-016-2|pages=97–}} To fit the stones properly to each other, masons would utilize strips of lead to form templates of the already laid blocks, which were then used to shape the to-be-adjoined ones.{{Cite book |last=Scranton |first=Robert L. |url=https://babel.hathitrust.org/cgi/pt?id=uc1.b4324563&seq=47 |title=Greek walls |publisher=Harvard University Press |year=1941 |isbn=9780598572547 |pages=27}}

Sites

=Easter Island=

File:Ahuvinapu.jpg

Ahu Vinapu

=Finland=

File:Bomarsund 3.jpg

Bomarsund Fortress

=Greece=

File:Section of Polygonal Wall at Delphi.jpg

=Italy=

In Italy, polygonal masonry is particularly indicative of the region of Latium, but it occurs also in Etruria, Lucania, Samnium, and Umbria; scholars including Giuseppe Lugli have carried out studies of the technique.Frank, T. 1924. "Roman buildings of the Republic: an attempt to date them from their materials." MAAR 3.{{cite book|author=Giuseppe Lugli|title=La Tecnica Edilizia Romana Con Particolare Riguardo a Roma E Lazio: Testo. 1|url=https://books.google.com/books?id=ftGxnQEACAAJ|year=1957|publisher=Johnson Reprint}} Some notable sites that have fortification walls built in this technique include Norba, Signia, Alatri, Boiano, Circeo, Cosa, Alba Fucens, Palestrina, and Terracina.{{cite book|author=Jeffrey Alan Becker|title=The Building Blocks of Empire: Civic Architecture, Central Italy, and the Roman Middle Republic|url=https://books.google.com/books?id=5kMjzj8WJhgC&pg=PA109|year=2007|publisher=ProQuest|isbn=978-0-549-55847-7|pages=109–}} The Porta Rosa of the ancient city of Velia employs a variant of the technique known as Lesbian masonry.