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Circles, parabolas, ellipses,and hyperbolas are called conic sections because you can get those shapes by placing two cones - one on top of the other - with only the tip touching, and then you cut those cones by a plane. When you move that plane around you get different shapes.

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Q: Why are circles ellipse parabolas and hyperbolas called conic sections?

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They are all conic sections.

It is simply an elongated circle, possibly an oval but NOT an ellipse. It is not an ellipse because it has two straight sections. An ellipse is curved at all points along its perimeter.

There are infinitely many shapes. Amongst them are conic sections (circle, ellipse, parabola, hyperbola); epicycles, cardoids, etc; totally irregular shapes like blobs or outlines of clouds or puddles of water; etc.

It isn't possible to give a generalised formula for the circumference of an ellipse in terms of elementary functions.

the formula for finding the area of an ellipse is add it then multiply and subtract that is the final

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Circles, parabolas, ellipses, and hyperbolas are all conic sections. Out of these conic sections, the circle and ellipse are the ones which define a closed curve.

They are both considered as "conic sections". If you take a cone and slice it slightly slanted, you get an ellipse. In the case of parabolas, if you cut off a side (not the tip) vertically, you end up with a parabola.

Yes; the circle is a special case of an ellipse.

For Ellipse: The 2 circles made using the the ellipse center as their center, and major and minor axis of the ellipse as the dia.For Hyperbola: 2 Circles with centers at the center of symmetry of the hyperbola and dia as the transverse and conjugate axes of the hyperbolaRead more: eccentric-circles

Parabolas are used in satalights and flash lights and archiceture and maths, whoever wrote eggs is very wrong parabolas ends never meet * * * * * All very true. The only problem is that a parabola is not an ellipse! One of the main uses for an ellipse is to describe planetary orbits.

An ellipse is a conic section which is a closed curve. A circle is a special case of an ellipse.

An ellipse is the locus of a point such that the sum of its distance from two fixed points is the same. The shape is like a stretched circle but its circumference does not become a straight line.An oval is an imprecise term for all kinds of "stretched" circles. The word is derived from ova = egg so an oval could have the shape of the cross section of an egg; it could be an ellipse or it could be like a running track, which consists of two semi-circles with parallel straight sections.

No. A circle is a special kind of ellipse.

"Elliptical" means they look like ellipses.

Ellipse circle

Johannes Kepler

both are conic sections ( the intersection of a cone by a plane)both have two directricesboth have two focithe ellipse is the locus of points so that sum of the distances to the foci is constant/the hyperbola is the locus of points so that difference of the distances to the foci is constant.In projective geometry they are equivalent. Hyperbolas are just ellipses that cross over infinity. (imagine watching a big giant ellipse that goes off in one direction past the horizon line and then reemerges from the horizon line behind you. It would look just like a hyperbola.)The hyperbola is an ellipse with an imaginary semi-minor axis (a negative quare root; hence the change in sign in the hyperbola's formula)