CREAR UN FORMGROUP Y DEFINIRLO

forma: FormGroup = new FormGroup({});

this.forma = new FormGroup({

nombre: new FormControl('', [Validators.required, Validators.minLength(3)]),

apellido: new FormControl('', [Validators.required, Validators.minLength(3)]),

correo: new FormControl('', [Validators.required, Validators.minLength(3), Validators.pattern("[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,3}$") )

});