Working with linestring

Source code:
		
fire.require(
	function(){
		var output = $("#output > pre > code");
		
		var pm = new fire.gear.geom.PrecisionModel(fire.gear.geom.PrecisionModel.FLOATING);
		var factory = new fire.gear.geom.GeometryFactory(pm);
		var c1  = new fire.gear.geom.Coordinate(8, 43, 10);
		var c2  = new fire.gear.geom.Coordinate(8, 44, 10);
		var c3  = new fire.gear.geom.Coordinate(9, 45, 10);
		var ls1 = factory.createLineString([c1,c2,c3]);
		output.append("LINESTRING: " + ls1.toString() + "<br/>");
		output.append("isValid?: " + ls1.isValid() + "<br/>");
		output.append("lenght: " + ls1.getLength() + "<br/>");
		output.append("centroid: " + ls1.getCentroid() + "<br/>");
		var env = ls1.getEnvelope();
		output.append("envelope: " + env.toString() + "<br/>");
		
		output.append("<br/>");
		output.append("points: " + ls1.getNumPoints() + "<br/>");
		for(var i=0; i < ls1.getNumPoints(); i++){
			output.append("point " + i + ": " + ls1.getPointN(i).toString() + "<br/>");
		}
		
		output.append("<br/>");
		output.append("coordinates: " + ls1.getCoordinates() + "<br/>");
		for(var i=0; i < ls1.getCoordinates().length; i++){
			output.append("coordinate " + i + ": " + ls1.getCoordinateN(i).toString() + "<br/>");
		}
		
		output.append("<br/>");	
		output.append("Start point: " + ls1.getStartPoint() + "<br/>");
		output.append("End point: " + ls1.getEndPoint() + "<br/>");
		output.append("is closed?: " + ls1.isClosed() + "<br/>");
				
	} , {
		 modules : [fire.Modules.GEAR]
		,mode : fire.Mode.BUILD
		,otherScripts: []
		,relative: "../lib/fire/"
	}	

);