8). (4 points)

Answer: ____________

9). (4 points)
What is the area of the shaded region formed by connecting midpoints of the sides of the rectangle?
Answer: ____________
10). (4 points) [Extra credit]
What is the starting number?


Answer: ____________
11). (4 points) [Extra credit]
Draw a sketch that shows how these six pieces could be put together to form a square.