On Mon, 21 Jan 2002, Th. Taudin-Chabot wrote: > But through three point s it is always possible to draw a circle, so three > points seems not to be the solution. > > Thibaud Chabot
More precisely, through three points you can draw any second-degree curve. The form of the equation that defines the curve is different for circle, ellipse, parabola, and hyperbola. Three points are insufficient to determine *which* curve, but just right to completely define a particular one... Dave
