Extended image description for Page 226
The slave’s first answer: the double line represents a small square inside a large one. The small square is the original square with a side of length 2. The area of the large square is 16. The slave’s second answer: the one-and-a-half line depicts a small square inside a large one. The small square is the original square with a side of length 2, and the area of the large square is 9.