PlotPoints in plot

*To*: mathgroup at smc.vnet.net*Subject*: [mg48520] PlotPoints in plot*From*: mathma18 at hotmail.com ("G.L.Narasimham")*Date*: Fri, 4 Jun 2004 04:49:37 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

For the plot command Plot[Sqrt[1-x^2],{x,-1,1},PlotPoints->3] I expected to see a triangle joining 3 points on a circle, but a continuous line ( default PlotPoints->20? )appears. However, ParametricPlot3D[{Cos[t],Sin[t],0},{t,0,Pi},PlotPoints->3,ViewPoint->{0,0,5}] gives a triangle. How to get a polygon of straight sides in the unparametered Plot?

**Follow-Ups**:**Re: PlotPoints in plot***From:*DrBob <drbob@bigfoot.com>