{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,1,13]],"date-time":"2024-01-13T17:01:01Z","timestamp":1705165261980},"reference-count":0,"publisher":"Walter de Gruyter GmbH","issue":"1","license":[{"start":{"date-parts":[[2016,3,1]],"date-time":"2016-03-01T00:00:00Z","timestamp":1456790400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-sa\/3.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2016,3,1]]},"abstract":"<jats:title>Summary<\/jats:title>\n               <jats:p> We introduce, using the Mizar system [1], some basic concepts of Euclidean geometry: the half length and the midpoint of a segment, the perpendicular bisector of a segment, the medians (the cevians that join the vertices of a triangle to the midpoints of the opposite sides) of a triangle. <\/jats:p>\n               <jats:p>We prove the existence and uniqueness of the circumcenter of a triangle (the intersection of the three perpendicular bisectors of the sides of the triangle). The extended law of sines and the formula of the radius of the Morley\u2019s trisector triangle are formalized [3]. <\/jats:p>\n               <jats:p>Using the generalized Ceva\u2019s Theorem, we prove the existence and uniqueness of the centroid (the common point of the medians [4]) of a triangle.<\/jats:p>","DOI":"10.1515\/forma-2016-0002","type":"journal-article","created":{"date-parts":[[2016,8,22]],"date-time":"2016-08-22T14:36:23Z","timestamp":1471876583000},"page":"17-26","source":"Crossref","is-referenced-by-count":2,"title":["Circumcenter, Circumcircle and Centroid of a Triangle"],"prefix":"10.1515","volume":"24","author":[{"given":"Roland","family":"Coghetto","sequence":"first","affiliation":[{"name":"Rue de la Brasserie 5 7100 La Louvi\u00e8re, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"374","published-online":{"date-parts":[[2016,8,31]]},"container-title":["Formalized Mathematics"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/content.sciendo.com\/view\/journals\/forma\/24\/1\/article-p17.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.sciendo.com\/article\/10.1515\/forma-2016-0002","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,4,8]],"date-time":"2021-04-08T04:02:24Z","timestamp":1617854544000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.sciendo.com\/article\/10.1515\/forma-2016-0002"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,3,1]]},"references-count":0,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2016,8,31]]},"published-print":{"date-parts":[[2016,3,1]]}},"alternative-id":["10.1515\/forma-2016-0002"],"URL":"https:\/\/doi.org\/10.1515\/forma-2016-0002","relation":{},"ISSN":["1898-9934"],"issn-type":[{"value":"1898-9934","type":"electronic"}],"subject":[],"published":{"date-parts":[[2016,3,1]]}}}