University of St. Andrews (UK)
University of St. Andrews: Cissoid of Diocles
Shows the a graph of the Cissoid of Diocles and the formula in rectangula and polar coordinates. Also includes a history of the cissoid.
University of St. Andrews (UK)
University of St. Andrews: Cissoid of Diocles
Detailed and comprehensive site explaining the Cissoid of Diocles. A Java-enhanced interactive is included.
Wolfram Research
Wolfram Math World: Cissoid of Diocles Pedal Curve
Short site explaining the Cissoid of Diocles Pedal Curve. The site has links to related topics, and includes a graph and a brief explanation.
University of St. Andrews (UK)
University of St. Andrews: Cissoid of Diocles
This site, which is provided for by the University of St. Andrews, describes the properties behind cissoids and graphs them.