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An ellipse whose eccentricity is zero is a circle.

As its eccentricity increases, it becomes more and more elliptical, i.e. its foci move farther apart and it appears more "egg-shaped".

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What is the eccintricity of a circle?

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How does the eccentricity of an ellipse relates to its shape?

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What is the allowable eccentricity of pile?

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The ellipse with less eccentric is smaller or larger than an ellipse with more eccentric?

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What does eccentricity mean to an astronomer?

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