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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

• Follow-Ups:
  • Re: Problem with 3D Polygon
    • From: SteveC <steve@fractalus.com>