To get from your house to class you walk east 579 feet. after class you walk south west 965 feet to meet your friends at lunch. when walking north the 772 feet back home from lunch, what type of triangle did you form?
You formed a right-angled triangle. I drew this out at first, but you can double check it as 579² + 772² = 965², which is the rule for a right-angled triangle. I hope this helps!