As most developers already know, Google offer a nice list of CDN assets that include jQuery and jQuery UI as well as AngularJS.
Although it isn’t publicly listed on Google’s CDN libraries list located here, separate modules like ngRoute and ngResource are also hosted and can be included. Why Google don’t publicly state this fact beats me.
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular-route.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular-resource.min.js"></script>
Please ensure you change the version number to reflect the current version of AngularJS, at the time of writing this it was version 1.2.23.
