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Problem with 3D Polygon

  • To: mathgroup at smc.vnet.net
  • Subject: [mg33402] Problem with 3D Polygon
  • From: "Kevin J. McCann" <kmccann at umbc.edu>
  • Date: Wed, 20 Mar 2002 01:53:06 -0500 (EST)
  • Organization: University of Maryland, Baltimore County
  • Sender: owner-wri-mathgroup at wolfram.com

When I plot the following

Graphics3D[{LightBlue,
        Polygon[{{1,0,0},{1,0,1},{-1,0,1},{-1,0,0},{-1/2,0,0},{-1/2,0,
              1/2},{1/2,0,1/2},{1/2,0,0},{1,0,0}}]}],Lighting->False,
    Boxed->False];

I get just a blue rectangle with some of the boundary drawn, not an inverted
"U" shape. Can someone explain this please.

Kevin




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