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ERIC Number: EJ317401
Record Type: CIJE
Publication Date: 1985
Pages: N/A
Abstractor: N/A
ISBN: N/A
ISSN: N/A
EISSN: N/A
Constructing the Foci and Directrices of a Given Ellipse.
Moore, Charles G.
College Mathematics Journal, v16 n2 p122-28 Mar 1985
A construction of an ellipse, given its foci and major-axis length 2a and using a compass and straightedge, is illustrated. It is based on Dandelin's elegant proofs that the sections formed by the intersections of a cone with a plane are an ellipse, parabola, or hyperbola. (MNS)
Descriptors: College Mathematics, Geometric Concepts, Geometric Constructions, Higher Education, Mathematics, Mathematics Instruction, Mathematics Materials, Teaching Methods
Publication Type: Journal Articles; Guides - Classroom - Teacher
Education Level: N/A
Audience: Teachers; Practitioners
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A