How can we check if intersection

[sierraodcpvtltd]

Hi,

I tried this https://stackoverflow.com/questions/24504068/how-to-show-the-intersecting-area-of-two-polygons-on-google-maps

If I alert this alert(intersection.getCoordinates());

Getting following and this has undefined value also
(25.774, -65.40012284373873, undefined),(32.321, -64.757, undefined),(25.774, -80.19, undefined),(25.774, -65.40012284373873, undefined)

Also
How can we check can we check if (intersection )
after intersection = bermudaPolygon.intersection(anotherPolygon);

Please help

Thanks