The question is a strange one as the answer depends on the context in which the question is asked. Graphically speaking: A line forming a perfect circle means that given a set point as the centre of the circle, the line will always be the exact same distance from the centre of the circle at any point along the line. An Ellipse on the other hand is a smooth closed curve that is symmetrical about its centre point, or by way of example, two points on the ellipse which are exactly opposite each other across the centre of the ellipse will each be exactly the same distance from the centre. Mathematically speaking, the difference can be defined by the equations (formulae) of each: A perfect Circle will have the equation: (x-a)2 + (y-b)2 = r2 for a circle with: a centre in Cartesian co-ordinates of (a,b)
a radius of r
An Ellipse will have the equation: (x2/a2) + (y2/b2) = 1 for an ellipse with: a maximum value in the X-axis of 'a' (+a or -a)
a maximum value in the Y-axis of 'b' (+b or -b) The essential difference in these equations can be seen if we consider an ellipse and a circle each with a centre of (0,0) in Cartesian co-ordinates. the equation for a circle would become: X2 + Y2 = r we can manipulate this equation by dividing both sides by 'r' to give X2/r + Y2/r = 1 the only difference now between the equation of the ellipse and this equation of a circle is that instead of allowing the 'r' X2/r to be different to the 'r' in Y2/r as in the case of an ellipse, both are kept the same.
Variable, as an ellipse is not a perfect circle.
ellipse is the shape of an egg
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
Ellipse
They are notnecessarily the same. A circle is a subcategory of an ellipse, meaning that every single circle is guaranteed to be an ellipse, but not all ellipses will be a circle. Just like a square will be a rectangle, but not all rectangles will be squares. A circle requires that the radius remains constant throughout the entire circle, whereas an ellipse does not require this. It just has an extra requirement that disqualifies some ellipses.
Variable, as an ellipse is not a perfect circle.
SHIFT
No - The eccentricity only tells us the degree to which the ellipse is flattened with respect to a perfect circle.
Johannes Keplernewtest3
A circle is an ellipse, so it's elliptical either way.However, the orbit of Mars is not a perfect circle.
Kepler discovered that the orbit of each planet is an ellipse rather than a perfect circle. The planet with an orbit that is closest to a circle is Venus.
A circle,An ellipse, A sphere,A normal (Gaussian) distribution.A circle,An ellipse, A sphere,A normal (Gaussian) distribution.A circle,An ellipse, A sphere,A normal (Gaussian) distribution.A circle,An ellipse, A sphere,A normal (Gaussian) distribution.
An oval. Or an ellipse.
ellipse is the shape of an egg
Yes; the circle is a special case of an ellipse.
An ellipse is a conic section which is a closed curve. A circle is a special case of an ellipse.
It's technically an ellipse, not a perfect circle. It varies by a few million kilometers; our average orbital radius is 148 million km.