5. (6 points) Count the number of squares in the figure.



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【Solution】Solution: By identifying patterns in the numbers, we get:
(1) There are $4 \times 3=12$ (squares) with a side length of 1;
(2) There are 6 squares with a side length of 2;
(3) There are 2 squares with a side length of 3.
(4) There are 8 squares with the diagonal of the small squares as their sides;
(5) There are 17 squares with half the diagonal as their side length;
(6) There is 1 square with three halves of the diagonal as its side length.
Therefore, the total number of squares in the figure is: $12+6+2+8+17+1=46$ (squares).
Answer: There are 46 squares in the figure.