polygon

A polygon is simply a chain of lines.

    polygon({"points" => [[[-100,-50],[-100,20]],
			  [[0,30]],
			  [[-30,20],[30,-20]],
			  [[50,70],[100,-70]],
			  [[0,-100],[-40,-80]]
		 ],
	    "color" => "Green"});

If the additional parameter closed is equal to 1, it produces a closed polygon:

    polygon({"points" => [[[-100,-50],[-100,20]],
			  [[0,30]],
			  [[-30,20],[30,-20]],
			  [[50,70],[100,-70]],
			  [[0,-100],[-40,-80]]
		 ],
	    "closed" => 1});

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