import { Component, OnInit } from '@angular/core';
import { FormControl } from '@angular/forms';

@Component({
  selector: 'app-triangle',
  templateUrl: './triangle.component.html',
  styleUrls: ['./triangle.component.css']
})
export class TriangleComponent implements OnInit {

  base = new FormControl('');
  height = new FormControl('');
  area = new FormControl('');

  constructor() { }

  ngOnInit(): void {
  }

  calcArea() {
    let area = Number(this.base.value) *
      Number(this.height.value) / 2;
    this.area.setValue(area);
  }
}