To find the side length \( s \) of Square ABCD using the Pythagorean Theorem, we first need to know the relationship between the side length and the diagonal of the square. The Pythagorean Theorem states that in a right triangle, the sum of the squares of the lengths of the two shorter sides is equal to the square of the length of the hypotenuse.
For a square, if \( s \) is the length of each side, the length of the diagonal \( d \) can be found using the formula derived from the Pythagorean Theorem:
\[ d = \sqrt{s^2 + s^2} = \sqrt{2s^2} = s\sqrt{2} \]
If you have the length of the diagonal \( d \), you can solve for \( s \):
\[ d = s\sqrt{2} \implies s = \frac{d}{\sqrt{2}} = \frac{d \sqrt{2}}{2} \]
Please provide the measurement of the diagonal or any other relevant information to calculate the side length \( s \). Without that specific information, I cannot determine the side length of Square ABCD.