Why do we use Euclidean Geometry. How is it helpful?

Geoamtry is hard to do and how do you do it cause i want to know how. And how it helps us in life. And i need some help really bad in Math. i think it's hard for other people as well. My teacher try to help me with it but i just don't get math at all. i had coach prosser and he is a great teacher for me to have and so is Ms.ida harris and Mr.hudak there all good teachers. And i had coach prosser for algebra 11 as well. But i am trying my best at it.