In mathematics, the eccentricity (sometimes spelled "excentricity"), denoted ε (or, for basic text notation "e"), is a parameter associated with every conic section. It can be thought of as a measure of how much the conic section deviates from being circular. In particular,
* The eccentricity of a circle is zero.
* The eccentricity of an ellipse which is not a circle is greater than zero but less than 1.
* The eccentricity of a parabola is 1.
* The eccentricity of a hyperbola is greater than 1.
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rdfs:label
| - Eccentricity
- Eccentricity
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rdfs:comment
| - From Greek εκκεντρικός ekkentrikos, from εκ- ek "from" + κεντρικός kentrikos "of the center, central"
- In mathematics, the eccentricity (sometimes spelled "excentricity"), denoted ε (or, for basic text notation "e"), is a parameter associated with every conic section. It can be thought of as a measure of how much the conic section deviates from being circular. In particular,
* The eccentricity of a circle is zero.
* The eccentricity of an ellipse which is not a circle is greater than zero but less than 1.
* The eccentricity of a parabola is 1.
* The eccentricity of a hyperbola is greater than 1.
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dbkwik:interlingua...iPageUsesTemplate
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dbkwik:math/proper...iPageUsesTemplate
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abstract
| - From Greek εκκεντρικός ekkentrikos, from εκ- ek "from" + κεντρικός kentrikos "of the center, central"
- In mathematics, the eccentricity (sometimes spelled "excentricity"), denoted ε (or, for basic text notation "e"), is a parameter associated with every conic section. It can be thought of as a measure of how much the conic section deviates from being circular. In particular,
* The eccentricity of a circle is zero.
* The eccentricity of an ellipse which is not a circle is greater than zero but less than 1.
* The eccentricity of a parabola is 1.
* The eccentricity of a hyperbola is greater than 1. Furthermore, two conic sections are similar if and only if they have the same eccentricity.
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