NotesFAQContact Us
Search Tips
Peer reviewed Peer reviewed
Direct linkDirect link
ERIC Number: EJ900055
Record Type: Journal
Publication Date: 2007-Nov
Pages: 11
Abstractor: As Provided
Reference Count: 0
ISSN: ISSN-0746-8342
Commensurable Triangles
Parris, Richard
College Mathematics Journal, v38 n5 p345-355 Nov 2007
Everyone knows what makes a 3-4-5 triangle special, but how many know what makes a 4-5-6 triangle special? It is an integer-sided triangle in which one angle is twice another. It is enjoyable to search for these things, but for those who are impatient, this article derives explicit polynomial formulas that generate all of the basic examples of triangles with integer sides and one angle a rational multiple of another.
Mathematical Association of America. 1529 Eighteenth Street NW, Washington, DC 20036. Tel: 800-741-9415; Tel: 202-387-5200; Fax: 202-387-1208; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A