Use the diagonals to determine whether a parallelogram with vertices e(5, 0), f(2, 4), g(−2, 1), and h(1, −3) is a rectangle, rhombus, or square. give all the names that apply.

Dana wants to identify the favorite professional baseball team of people in her community. she stands outside a local sporting goods store and asks every other person who enters, "what is your favorite professional baseball team? " will the results of her survey be valid? explain.