| Tool: The Focus-directrix Definition |
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| Go to: | http://www.maths.gla.ac.uk/~wws/cabripages/conics/focus.html (opens a new window) | ||
| Description: | The CabriJava applet shows a conic with focus F, directrix L passing through a point P. The choice of P determines the eccentricity - as the ratio |PQ|/|PF|. You can move F and P to see what shapes are possible. | ||
| Technology Type: | Java Applet | ||
| Author: | Wilson Stothers | ||
| Language: | English | ||
| Cost: | Does not require payment for use | ||
| Average Rating: |
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| Courses: | Geometry | Straightedge and compass | |
| PreCalculus | Conic Sections | ||
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