LYCOS RETRIEVER 
Ellipse: Circles
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Equation of Ellipse | Major Axis of Ellipse| Minor Axis of Ellipse|Vertices| Co-vetices | focus of an ellipse | Is a circle an ellipse? | Eccentricty of Ellipse | area of an ellipse | Orbits of Planets as ellipses | Translate ellipse
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The Ellipse class is used to draw elliptical shapes and circles to graphics areas. All you need to specify are the dimensions of the ellipse and its colour. Here is a DML based example:
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This example shows how to draw ellipses and circles by using the Ellipse element. To draw an ellipse, create an Ellipse element and specify its Width and Height. Use its Fill property to specify the Brush that is used to paint the interior of the ellipse. Use its Stroke property to specify the Brush that is used to paint the outline of the ellipse. The StrokeThickness property specifies the thickness of the ellipse outline.
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A circle is a state of an Ellipse. An Ellipse is really a state of a Conic Section. A conic section is really a state of a polynomial. A polynomial is really a state of a generic nth order equation.
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A circle, which is formed by a plane that is perpendicular to the axis of the cone, is a specialized form of ellipse. In an ellipse that is ... a circle, the two foci coincide in a single point (the circle’s center), and the major and minor axes are of equal length.
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MORE ABOUT
Circles