# Choice of ellipses --- Introduction ---

An ellipse (oriented horizontally/vertically) is described by an equation of the form

a(x-x0)2 + b(y-y0)2 = c ,

or of the form
ax2+by2+cx+dy+e = 0 ,

where (x0,y0) is the center of the ellipse and the ratio between the two axes of the ellipse is described by the ratio between a and b (how?).

This online exercise can either plot an ellipse and ask you to recognize its equation among a list to choose from, or give an equation and ask you to recognize the plotted ellipse among a list to choose from.

Configuration of the exercise:
• Style of the exercise: .
• Type of the equation:
• Type of variations: .
• A session will be composed of questions. (With a score assigned at the end of each session.)

Other exercises on: Graphic choices   ellipses   Curves

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Description: recognize an ellipse according to its equation, or vice versa. interactive exercises, online calculators and plotters, mathematical recreation and games

Keywords: interactive mathematics, interactive math, server side interactivity, geometry, ellipse, curve, conic