I am new to angular, I want to know if angularjs supports nested routes like emberjs I mean routes like this: myappurl/#/company/:company_id/department/:department_id
It worth mentioning there are another Angular libraries except ui-router to accomplish this task. This one works too: 
http://angular-route-segment.com
It is much simpler to use than ui-router. Sample route configuration looks like this:
$routeSegmentProvider.
when('/section1',          's1.home').
when('/section1/prefs',    's1.prefs').
when('/section1/:id',      's1.itemInfo.overview').
when('/section1/:id/edit', 's1.itemInfo.edit').
when('/section2',          's2').
segment('s1', {
    templateUrl: 'templates/section1.html',
    controller: MainCtrl}).
within().
    segment('home', {
        templateUrl: 'templates/section1/home.html'}).
    segment('itemInfo', {
        templateUrl: 'templates/section1/item.html',
        controller: Section1ItemCtrl,
        dependencies: ['id']}).
    within().
        segment('overview', {
            templateUrl: 'templates/section1/item/overview.html'}).
        segment('edit', {
             templateUrl: 'templates/section1/item/edit.html'}).
        up().
    segment('prefs', {
        templateUrl: 'templates/section1/prefs.html'}).
    up().
segment('s2', {
    templateUrl: 'templates/section2.html',
    controller: MainCtrl});
It can also be worth checking out https://github.com/angular-ui/ui-router
 
				
				According to the example given in the document: https://docs.angularjs.org/api/ngRoute/directive/ngView. Yes, Angularjs supports it.