AngularJS 1.2.x

var app = angular.module('plunker', []);

app.controller('MainCtrl', function($scope) {
  $scope.name = 'World';
});

<!DOCTYPE html>
<html ng-app="plunker">

  <head>
    <meta charset="utf-8" />
    <title>AngularJS Plunker</title>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <link rel="stylesheet" href="style.css" />
    <script data-require="angular.js@1.2.x" src="https://code.angularjs.org/1.2.21/angular.js" data-semver="1.2.21"></script>
    <script src="app.js"></script>
  </head>

  <body ng-controller="MainCtrl">
     <div ng-include src='"file1.html"'></div>
     <div ng-include src='"file2.html"'></div>
  </body>

</html>

/* Put your css in here */

file1

file2