Answer:
The value of n is 6.
Explanation:
Given that these 2 triangles form a square so we can assume that all sides are same. Then, we have to apply Pythagoras Theorem, a² + b² = c², where a, b are sides and c is hypotenuse :
n² + n² = (6√2)²
 2n² = 6² × (√2)²
 2n² = 72
 n² = 72 ÷ 2
 n² = 36
 n = √36
 n = 6