A green card doesn't have anything to do with citizenship, but is important if you want to stay here for a long time without committing to a citizenship. If you are ready, take the citizenship test. If not then get a visa or green card and take a course to become a citizen.
A full circle shares a value of 360°... one angel we know is 140° and the other is 90° so we can make an equation like: 140+90+a=360. the answer would be 130°
This is the answer it is down below on the photo look at the image: