A regular Nonagon geometric shape

						var board = JXG.JSXGraph.initBoard('box1', {
boundingbox: [-10, 10, 10, -10],showNavigation:false, showcopyright: false, axis: false,
});
var p1 = board.create('point', [-1, 2.0],{name:'',size:1, label:{offset:[-20,0]}});
var p2 = board.create('point', [6.5, 2.0],{name:'',face:'',});
var c1 = board.create('circle', [p1, p2],{visible:false});
 
var l = [];
var updateshape=function(){
var s=[];       
var n = 9;
 
if (/\d*/.test(n)&&n<101){
	 if(l.length > 0){
		 for(var i=0;i