Description for Correct answer:
Sum of the interior angles of an n-sided regular polygon

= \( \Large \left(2n-4\right) \times 90 ^{\circ} \)

Therefore, \( \Large \left(2n-4\right) \times 90 ^{\circ} = 156 \times n \)

=> \( \Large 180n - 360 = 156n \)

=> \( \Large 180n - 156n = 360 \)

=> \( \Large n = \frac{360}{24} = 15 \)