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from | Encarta |  |
Conic Sections |
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| An ellipse is one of the conic sections—curves formed by slicing up a hollow cone. Circles, parabolas, and hyperbolas are also conic sections. The angle of the slice determines which curve is produced. | ||||||
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| © Microsoft Corporation. All Rights Reserved. | ||||||
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| Appears in these articles: | ||||||
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| Circle; Geometry; Mathematics; Conic Sections; Parabola; Hyperbola; Ellipse | ||||||
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