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ERIC Number: EJ769644
Record Type: Journal
Publication Date: 2007
Pages: 7
Abstractor: ERIC
ISBN: N/A
ISSN: ISSN-0730-8639
EISSN: N/A
The Director Circle of a Central Conic Section
Ayoub, Ayoub B.
Mathematics and Computer Education, v41 n2 p136-142 Spr 2007
Each ellipse and hyperbola has a circle associated with it called the director circle. In this article, the author derives the equations of the circle for the ellipse and hyperbola through a different approach. Then the author concentrates on the director circle of the central conic given by the general quadratic equation. The content of this article could be used as enrichment to an analytic geometry course. The author discusses the director circle as a locus as well as the director circle of an arbitrary central conic. (Contains 5 figures.)
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: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A