How can I draw a line between two google map native markers?

Ionic Framework ionic-v3
1

Hello guys,

How can I draw a line between two google maps native markers?
In my project, I need one dynamic marker and one fixed marker.

        addMarker() {
          this.map.addMarker({
            title: 'My Marker',
            icon: 'blue',
            animation: 'DROP',
            position: {
              lat: this.place.lat,
              lng: this.place.lng
            }
          })
          .then(marker => {
            marker.on(GoogleMapsEvent.MARKER_CLICK).subscribe(() => {
              alert('Marker Clicked');
            });
          });
        }

2nd marker:

addMarker2() {
          this.map.addMarker({
            title: 'My Marker',
            icon: 'blue',
            animation: 'DROP',
            position: {
              lat: -33,
              lng: 773231
            }
          })
          .then(marker => {
            marker.on(GoogleMapsEvent.MARKER_CLICK).subscribe(() => {
              alert('Marker Clicked');
            });
          });
        }

and how can I show route between the two markers using a line?

Thanks in advance,