How to make simple button navigation in ionic with angularjs

I'm making a functional button in my ionic app, and I want to know what I need to do to make a button centered on a blank ionic app load another page when clicked.

I have experimented with adding ng-click="loadPage()" to the button in my index.html file. I defined $scope.loadPage = function() { $state.go(page.html)} in my controller.