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50 Years of ERIC
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ERIC Number: EJ769628
Record Type: Journal
Publication Date: 2007
Pages: 5
Abstractor: ERIC
Reference Count: 3
ISBN: N/A
ISSN: ISSN-0730-8639
Some Cosine Relations and the Regular Heptagon
Osler, Thomas J.; Heng, Phongthong
Mathematics and Computer Education, v41 n1 p17-21 Win 2007
The ancient Greek mathematicians sought to construct, by use of straight edge and compass only, all regular polygons. They had no difficulty with regular polygons having 3, 4, 5 and 6 sides, but the 7-sided heptagon eluded all their attempts. In this article, the authors discuss some cosine relations and the regular heptagon. (Contains 1 figure.)
Descriptors: Plane Geometry, Geometric Concepts, Equations (Mathematics), Mathematical Logic, Intellectual History, Demonstrations (Educational), Science Process Skills
MATYC Journal Inc. Mathematics and Computer Education, P.O. Box 158, Old Bethpage, NY 11804. Tel: 516-822-5475; Web site: http://www.macejournal.org
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: N/A