Explain why this quadrilateral is not a parallelogram.

If you are just building your payment history, how many points from a perfect score will you possibly miss?

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?