How to make Angular5 component inherit and extend parent heatplate?

Question

Angular

Angular5. I already have a written component with implemented functionality. I want to make a child component based on it, inherit the logic, but at the same time replace part of the parent template:

@Component({
  selector: 'app-parent',
  template: ' //reusable header element with logic

              *here we should have ability to change part of tamplate*
               <ng-container *ngTemplateOutlet="customTemplate"> </ng-container>

       //reusable footer element with logic
'
})
export class ParentComponent{
//logic impl

Child component:

@Component({
  selector: 'app-child',
  template: '
             //here i wanna extend parent template
             /*something like*/ <ng-template #customTemplate>
             //some template impl
</ng-template>'
})
export class ChildComponent extends ParentComponent{}

(it is possible to make a special abstract component and put everything in common into it).