如何获取从此表单中选择的单选按钮值

Question

  

如何为该表单分配表单控件，我需要获取表单值。

import { Component } from '@angular/core';

import { FormGroup } from '@angular/forms';

 
@Component({
  selector: 'app-e-mat-login',
  templateUrl: './e-mat-survey-forms.component.html',
  styleUrls: ['./e-mat-survey-forms.component.scss']
})
export class EMatSurveyComponent {
  //myForm:FormGroup;
   
  questions:any  = [
    {question:'Who is your First Prime Minister Of India?', options:['Dr.Manmohan Singh', 'Chandrashekar Ajadh','Mahatma Gandhi','Jyothirao Pule'], name:'answer1'},
    {question:'Who is your Second Prime Minister Of India?', options:['Dr.Manmohan Singh', 'Chandrashekar Ajadh','Mahatma Gandhi','Jyothirao Pule'], name:'answer2'},
    {question:'Who is your First lady Prime Minister Of India?', options:['Dr.Manmohan Singh', 'Chandrashekar Ajadh','Mahatma Gandhi','Jyothirao Pule'], name:'answer3'}

  ];
  constructor( ) { }
  ngOnInit() {
     
  }
  getAnswers():void{
    alert();
  }

}

<form name="survay-form">
  <div *ngFor="let x of questions">
    {{questions.indexOf(x) + 1 + " . "}}{{x.question}}<br/>
     <div *ngFor = "let y of x.options">
       <input type = "radio" [name] = 'x.name'/> {{y}}
     </div><br/>
     <button type="button" name="button" (click)="getAnswers();" class="mat-raised-button" *ngIf="questions.indexOf(x) == questions.length-1">Submit</button>
   </div>
   </form>