You’re in charge of filling out the office supply purchase orders for your company. if you need 20,000 sheets of paper, and one ream of paper equals 500 sheets, where will you get the best deal?

I'm a bit puzzled here because they did not provide you with any measures of the other angles, so i am unable to provide a theorem or postulate to support my answer, but i'd say 90 degrees because it looks closer to a right angle than anything.