Geometry

// defining geometry
var triangleGeometry = new THREE.geometry();
// verticles
triangleGeometry.verticle.push( new THREE.Vector3( 1, 1, 0 ));
triangleGeometry.verticle.push( new THREE.Vector3( 3, 1, 0 ));
triangleGeometry.verticle.push( new THREE.Vector3( 3, 3, 0 ));
// face
triangleGeometry.faces.push( new THREE.Face3( 0, 1, 2) );

var x = radius * Math.cos(angle) + location.x;
var y = radius * Math.sin(angle) + location.y;

var sphereMaterial = new THREE.MeshLamberMaterial();

sphereMaterial.color.r = 1.0;
sphereMaterial.color.g = 1.0;
sphereMaterial.color.b = 0.5;