Problem of the Month - April 2024

  How many rectangles (including squares) are there in this picture?  A three by three grid that forms a square consisting of 9 congruent squares.       

Solution(s)

There are 36 rectangles.  (There are twelve 1 x 2 rectangles, six 1 x 3 rectangles, four 2 x 3 rectangles, nine 1 x 1 squares, four 2 x 2 squares, and one 3 x 3 square)

Department