File:Ellipse Properties of Directrix.svg

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Summary

Description

English: A diagram showing some basic properties of an ellipse, including
The constant of proportionality is the eccentricity, e. D, called the directrix. The ratios e=f/a=a/d=PF/PD are always constant. *The eccentricity is always between 0 and 1. At zero, the ellispe becomes a circle, at 1 the ellipse becomes a parabola. Greater than one, it is a hyperbola.

These images were edited with the free open source program Inkscape

Date

2 July 2010, 19:03 (UTC)

Source

Ellipse Properties.svg:

Author

Ellipse Properties.svg: Inductiveload
derivative work: Dave3457 (talk)
derivative work: ElectroKid (☮ • ✍)

SVG development

The SVG code is valid.

This geometry was created with a text editor by Krishnavedala.

Please do not replace the simplified code of this file with a version created with Inkscape or any other vector graphics editor

This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Removed all information but the directrix. Note the location of the foci ect. were off on the original.. The original can be viewed here: Ellipse Properties.svg: .

Licensing

I, the copyright holder of this work, hereby publish it under the following license:

I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
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I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Original upload log

This image is a derivative work of the following images:

File:Ellipse_Properties.svg licensed with PD-self
- 2008-12-08T05:29:54Z Inductiveload 400x260 (30964 Bytes) Fix text?
- 2008-12-08T05:25:44Z Inductiveload 400x260 (27156 Bytes) {{Information |Description={{en|1=A diagram showing some basic properties of an [[:en:ellipse|]], including *The distance to a focus, ''F'', from the centre ''C'', is the eccentricity, ''e'' multiplied by the semimajor axis,

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File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	17:29, 7 January 2015	884 × 484 (1 KB)	Krishnavedala	Simplified hand-drawn and to the scale
	18:16, 6 July 2010	396 × 274 (34 KB)	Dave3457	Fixed Proportions of ellipse
	17:29, 6 July 2010	385 × 274 (33 KB)	Dave3457	Moved Text to bottom of image.
	18:13, 3 July 2010	385 × 274 (31 KB)	Dave3457	small
	19:44, 2 July 2010	385 × 274 (31 KB)	Dave3457	Simplified it
	19:06, 2 July 2010	422 × 275 (32 KB)	Dave3457	{{Information \|Description={{en\|1=A diagram showing some basic properties of an ellipse, including<br> The constant of proportionality is the eccentricity, ''e''. ''D'', called the directrix. The ratios e=f/a=d/a=PF/PD are always constant.