<P> The magic constant or magic sum of a magic square is the sum of numbers in any row, column, or diagonal of the magic square . For example, the magic square shown below has a magic constant of 15 . In general M = n ⋅ n 2 + 1 2 (\ displaystyle M = n \ cdot (\ frac (n ^ (2) + 1) (2))) where n (\ displaystyle n) is the side length of the square . </P> <P> The term magic constant or magic sum is similarly applied to other "magic" figures such as magic stars and magic cubes . Number shapes on a triangular grid divided into equal polyiamond areas containing equal sums give a polyiamond magic constant . </P>

How to find the magic constant in a magic square
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