Page 98 - Mathematics Class - IX
P. 98

PROJECT  6






        AIM
        Magic Squares.


        DEFINITION
        A magic square is a square array of numbers consisting of the distinct positive integers 1, 2, ..., n   arranged such
                                                                                                     2
        that the sum of the n numbers in any horizontal, vertical, or main diagonal line is always the same number.

                                                  15        15          15
                                                                             15


                                                  8         1        6       15



                                                  3         5        7       15




                                                  4         9        2       15



                                                                             15


        MAKING MAGIC SQUARE
          1.  Draw a pyramid on each side of the magic square as shown in figure.

                                                               3

                                                           2        6

                                                      1        5         9

                                                           4        8
                                                                7

          2.  The pyramid should have two less squares on its base than the number of squares on the side of the
              magic square.
          3.  Sequentially place the numbers 1 to n  of n × n magic square in the diagonals as shown in the given figure.
                                                  2
          4.  Relocate any number not in n × n square (that appears in the pyramid you added) to the opposite hole
              inside the square.

          5.  We  will get the following result.
                                                            2   7    6

                                                            9   5    1

                                                            4   3    8


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