| NAME __________________________________ | CLASS _________________ | DATE _________________ |
A magic square
is a square array of numbers arranged so that the sum of each row, column, and main diagonal is equal to the same "magic-square" constant. In this project, you will investigate some properties of magic squares and construct magic squares by using algebraic expressions. Then you will learn another way to arrange algebraic expressions so that they have "magical" properties.| 1. Add the numbers in each row, column, and diagonal of this square array of numbers. How are the sums related? |
|
||||||||||||||||
| ______________________________________________ | |||||||||||||||||
| ______________________________________________ |
| 2. This array has six broken diagonals:
(8, 3, 9, 14); (10, 6, 7, 11); (10, 13, 7, 4); (8, 12, 9, 5); (12, 2, 5, 15); and (6,
16, 11, 1). Find the sum of the numbers in each broken diagonal. How are the sums related? _________________________________________________________________ _________________________________________________________________ |
|||||||||||||||||
| 3. A magic square is said to be panmagic
if the sum of each broken diagonal is also equal to the magic-square constant. Is the
square array in Exercise 1 a panmagic square? Explain. _________________________________________________________________ |
|||||||||||||||||
| 4. Rotate the square array from Exercise 1
counterclockwise 90 degrees by filling in this square array. Describe any
"magical" qualities of the new square array. _________________________________________________________________ _________________________________________________________________ |
|
| 5. Now reflect the square
array from Exercise 4 about the vertical axis by filling in this square array. Describe
any "magical" qualities of this square array. _________________________________________________________________ _________________________________________________________________ |
|