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How would one best describe an ellipse?
Question
#62330. Asked by minuscule_. (Feb 06 06 8:32 PM)
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smeogalla
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a regular oval resulting when a cone is cut obliquely by a plane. from the greek elleipsis- deficit
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romeomikegolf
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a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it; "the sums of the distances from the foci to any point on an ellipse is constant" [syn: oval]
Or, in plain english, the shape of a rugby ball.
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gmackematix
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Well, a cross-section of a rugby ball.
It can best be described with two pins and a loop of string.
Or a pair of compasses and a piece of paper wrapped around a cylinder.
Or with a computer and the formula y = b^2.sq rt (1 - x/(a^2)) where a and b are the major and minor axes of the ellipse.
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gmackematix
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Even more simple methods include using an elliptical stencil, clicking the circles button in a MS Office program and dragging the mouse or finally, doing nothing and letting your planet describe an ellipse for you.
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