Curated OER
Zona Land: Conic Sections the Ellipse
View a simple graph of an ellipse and a photo showing how the ellipse intersects a cone.
Curated OER
Zona Land: Conic Sections the Ellipse
View a simple graph of an ellipse and a photo showing how the ellipse intersects a cone.
Curated OER
Ellipse Conic
An overview of the four types of conic sections is presented. The origin of how each conic is formed and a table of various characteritics specific to each type of conic is shown.
Curated OER
Graph Ellipse (Horiz.)
An overview of the four types of conic sections is presented. The origin of how each conic is formed and a table of various characteritics specific to each type of conic is shown.
Curated OER
Graph Ellipse (Vert.)
An overview of the four types of conic sections is presented. The origin of how each conic is formed and a table of various characteritics specific to each type of conic is shown.
University of St. Andrews (UK)
University of St. Andrews: Biography of Menaechmus
This University of St. Andrews site contains biographical information on the mathematician Menaechmus.
National Council of Teachers of Mathematics
The Math Forum: Analytic Geometry: Polar Coordinates
This site from The Math Forum provides great information on polar coordinates. You can access this information either by clicking on the coordinates link or just scrolling down, it is the first one listed on the page. Includes several...
Curated OER
Directrix
MathWorld delivers a brief definition of a focus, with diagrams showing the focus of an ellipse, a parabola, and a hyperbola.
National Council of Teachers of Mathematics
The Math Forum: Circles
Various forms of equations of circles are presented at the Math Forum: center-radius form, general form, diameter form, three-point form, and parametric form.