Question 516386
Each side length of PQRS is 10. If you draw the midpoints and the segments AB, BC, CD, and DA, you can find the length of each of these statements by noting that you have 45-45-90 triangles. The leg of each triangle is 5, so each of AB, BC, CD, DA is 5sqrt(2). The area of ABCD is (5sqrt(2))^2 = 50 (half the area of ABCD).