If you look at Y and compare it to 120, Y looks as if it is half of what the angle measurement 120 is. So you would do 120 divided by 2 (to get half of 120) and you end up with 60. We can infer that the top left angle measures 60. So, you do 60 divided by 5 (since you are looking for Y but there is a 5 in front of it so you would multiply 5 and Y to get 60. You need to do the inverse operation which is divide.) So you divide 60 and 5 and get 12. Replace Y with 12 and you have 5(12). The answer is Y=12
