text: var renderer = new THREE.WebGLRenderer();
  renderer.setSize(window.innerWidth, window.innerHeight);
  document.body.appendChild(renderer.domElement);
  
  var camera = new THREE.PerspectiveCamera(45, window.innerWidth/window.innerHeight,1,500);
  camera.position.set(0,0,100);
  camera.lookAt(0,0,0);
  var scene = new THREE.Scene();
  
  //criando material
  var material = new THREE.LineBasicMaterial({color: 0x0000ff});
  //criando geometria
  var geometry = new THREE.Geometry();
  geometry.vertices.push(new THREE.Vector3(-10,0,0));
  geometry.vertices.push(new THREE.Vector3(0,10,0));
  geometry.vertices.push(new THREE.Vector3(10,0,0));
  geometry.vertices.push(new THREE.Vector3(0,0,0));
  
  //aplicando o material na geometria
  var line = new THREE.Line(geometry,material);
  
  scene.add(line);
  renderer.render(scene,camera);
  
  