View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Repository of the Academy's Library Építés – Építészettudomány 46 (3–4) 291–318 DOI: 10.1556/096.2018.008 PENTAGONS IN MEDIEVAL ARCHITECTURE KRISZTINA FEHÉR* – BALÁZS HALMOS** – BRIGITTA SZILÁGYI*** *PhD student. Department of History of Architecture and Monument Preservation, BUTE K II. 82, Műegyetem rkp. 3, H-1111 Budapest, Hungary. E-mail:
[email protected] **PhD, assistant professor. Department of History of Architecture and Monument Preservation, BUTE K II. 82, Műegyetem rkp. 3, H-1111 Budapest, Hungary. E-mail:
[email protected] ***PhD, associate professor. Department of Geometry, BUTE H. II. 22, Egry József u. 1, H-1111 Budapest, Hungary. E-mail:
[email protected] Among regular polygons, the pentagon is considered to be barely used in medieval architectural compositions, due to its odd spatial appearance and difficult method of construction. The pentagon, representing the number five has a rich semantic role in Christian symbolism. Even though the proper way of construction was already invented in the Antiquity, there is no evidence of medieval architects having been aware of this knowledge. Contemporary sources only show approximative construction methods. In the Middle Ages the form has been used in architectural elements such as window traceries, towers and apses. As opposed to the general opinion supposing that this polygon has rarely been used, numerous examples bear record that its application can be considered as rather common. Our paper at- tempts to give an overview of the different methods architects could have used for regular pentagon construction during the Middle Ages, and the ways of applying the form.