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Q: How many foci does a circle have?
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How many foci in circular orbit?

Most orbits are elliptical; all NATURAL orbits are. There are two foci, or focuses, to an ellipse. The distance between the foci determines how eccentric, or non-circular, they are. If the two foci are in the same place, then the ellipse becomes a circle. So a circular orbit would have only one focus.


What is the FOCI of a circle?

A circle is an ellipse with an eccentricity of zero. Both foci of that ellipse are at the same point. In the special case of the circle, that point is called the "center".


What happen as foci of an ellipse get closer together?

The ellipse will become more circular until it becomes a circle when the two foci coincide.


What happens to the shape of an ellipse as the foci are moved closer together?

As the foci of an ellipse move closer together, the ellipse becomes more circular in shape. When the foci coincide, the shape is a circle. Note that circles are a subset of ellipses.


What are the difference between circle and ellipse between circle and ellipse?

An ellipse is a shape on which the sum of the distances from every point to two points inside called the foci (focuses) is always the same number. A circle is an ellipse with both foci (focuses) at the same point.


What do you call a deformed circle?

A randomly deformed circle has no specific name. A circle can be deformed into an ellipse (also known as an oval). An ellipse has two distinct "centres", called foci. The shape consists of the locus of points such that the sum of the distance from these points to the two foci is a constant.


What is the shape of the ellipse that both foci in the same place?

Both foci of any ellipse are always in the same plane.If they're both at the same point, then the ellipse is a circle.


How many foci does the graph of a hyperbola have?

Two foci's are found on a hyperbola graph.


What is the difference between a circle and a ellipse?

Basically a circle has a constant radius throughout and an ellipse does not.a circle has a constant radiusan ellipse has two foci. they are at either end of the ellipse


What is the difference between a circle and an ellipse?

-- the eccentricity or -- the distance between the foci or -- the ratio of the major and minor axes


If you move the two foci of an ellispe together so they become a single point what does the ellispe become?

A circle.


What is A flattened circle that is the earths orbit?

All orbits are ellipses. You might describe an ellipse as a "flattened circle", but mathematically, a circle is a special version of an ellipse in which both foci are at the same spot.