ERIC Number: EJ317401
Record Type: CIJE
Publication Date: 1985
Reference Count: 0
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)
Publication Type: Journal Articles; Guides - Classroom - Teacher
Education Level: N/A
Audience: Teachers; Practitioners
Authoring Institution: N/A