Step 0.

Install Virtual Reality Modeling Language (VRML2) browser/plugin such as CosmoPlayer2.0 (downloadanle from http://www.cai.com/cosmo/) or WorldView2.0 (downloadable from http://www.cai.com/cosmo/ or Cortona (downloadable from http://www.parallelgraphics.com/)

Step 1.


#VRML V2.0 utf8

Shape {
    geometry IndexedFaceSet{
	coord Coordinate{
	    point [
	    -1   0   0, 
             0   0   0, 
            -0.5 0.866025 0
	    ]
	}	
	coordIndex [
	0, 1, 2,-1
	]
    }	
}
VRML

Step 2.

#VRML V2.0 utf8

Shape {
    geometry IndexedFaceSet{
	coord Coordinate{
	    point [
	    -1   0   0, 
             0   0   0, 
            -0.5 0.866025 0
	    ]
	}	
	coordIndex [
	0, 1, 2,-1
	]

	texCoord TextureCoordinate {
	    point [ 
              0   0, 
              1   0, 
              0.5 0.866025
            ]
	}
	texCoordIndex [
	0 1 2 -1
	]
    }
    appearance Appearance{	
	texture ImageTexture {
	    url["tex/random7.jpg"]
	}	
    }
}
VRML

Step 3.

#VRML V2.0 utf8

Shape {
    geometry IndexedFaceSet{
	coord Coordinate{
	    point [
	    -1   0   0, 
             0   0   0, 
            -0.5 0.866025 0,
             0.5 0.866025 0
	    ]
	}	
	coordIndex [
	0, 1, 2,-1,
	1, 3, 2,-1
	]
	texCoord TextureCoordinate {
	    point [ 
              0   0, 
              1   0, 
              0.5 0.866025
            ]
	}
	texCoordIndex [
	0 1 2 -1,
	1 0 2 -1
	]
    }
    appearance Appearance{	
	texture ImageTexture {
	    url["tex/random7.jpg"]
	}	
    }
}
VRML

Step 4.

#VRML V2.0 utf8

DEF CELL Shape {
    geometry IndexedFaceSet{
	coord Coordinate{
	    point [ 
              -1   0 0, 
               0   0 0, 
              -0.5 0.866025 0, 
               0.5 0.866025 0
            ]
	}	
	coordIndex [
	0, 1, 2,-1,
	1, 3, 2,-1
	]
	texCoord TextureCoordinate {
	    point [ 
              0   0, 
              1   0, 
              0.5 0.866025
            ]
	}
	texCoordIndex [
	0 1 2 -1,
	1 0 2 -1
	]
    }
    appearance Appearance{	
	texture DEF TEXTURE ImageTexture {
	    url["tex/random7.jpg"]
	}	
    }
}

Transform {
    rotation 0 0 1 2.094395
    children USE CELL
}
Transform {
    rotation 0 0 1 -2.094395
    children USE CELL
}
VRML