# Websites on Conic Sections

See: Websites on Plane Curves, Printed References On Plane Curves.

Robert Yates: Curves and Their Properties.

### Math Related Links

#### Analytic treatment of conics

Silvio Levy/CRC Reference, about 5 pages on conics. Source www.geom.umn.edu

Alexander Bogomolny. A proof of ellipses being a conic section. Source www.cut-the-knot.com

June Jones. Tutorial on conics. (includes a list of applications) Source jwilson.coe.uga.edu

#### Optical Properties

“Geometry and Billiards”, Serge Tabachnikov, ~2005. ★ Department of Mathematics, Penn State University. A published book on the subject. Source www.math.psu.edu

“Billiards in the Round”, Ivars Peterson, 1997-03-03. One HTML page. Mathematical Association Of America's MathLand article. Discuss a billiard game played on a elliptical table, with illustrations. Source www.maa.org

#### Projective Geometry and other approach

Philip Spencer and Justin Moore. Explains projective geometry. ★ Source www.math.toronto.edu

Michel Guillerault. Projective geometry with Cabri II software. ★ (In French.) Source www-cabri.imag.fr

Wilson Stothers. Conics through both synthetic and algebraic approach, with Cabri II supplements. ★ Source www.maths.gla.ac.uk

#### Pascal's Theorem

Mathew Frank, on Pascal's theorem. (~4 pages) 1995 Source www.geom.umn.edu (2001-02)

### History Related Links

MacTutor Famous Curve Index: Ellipse; Hyperbola; Parabola.

Mathematician: John H. Conway. A newsgroup message on the etymology of parabola, hyperbola, and ellipse. (Local link. Copied with permission). conicsEtynomogy.txt.

### Misc Links

“Occurrence Of The Conics” by By Jill Britton 2008-02. A page that give examples of conic sections in everyday life, with many illustrations. ★ Source britton.disted.camosun.bc.ca.

Hollister David. Images of moiré; patterns of circles and lines simulating conics. Including a nice small animation that simulate conics with changing eccentricity. The site includes some other very nice mathematical arts. Source clowder.net Hop David on Dandelin Spheres ★: Source clowder.net