Curated OER
Conics in Geometry
High schoolers analyze characteristics and properties of two and three-dimensional shapes in this geometry lesson. They follow detailed directions to use the Cabri Geometry II Application on their TI-89 calculator to construct a...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: First Principle Hyperbolas
Dr. Math, in a reply to a student question, shows how to solve for the standard equation of a hyperbola.
Integrated Publishing
Web Algebra: The Ellipse
A lengthy example on how to formulate the equation of an ellipse.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Deriving the Hyperbola Formula
Dr. Math tackles a question about deriving the formula for a hyperbola posed by a student.
Other
Ma Ttours Definitions of Ellipse Terms Foci
Basic definitions are given for foci, focus, and other terms related to the focus (foci).