Correct Answer - Option 2 : 740
Given:
Number of sides of polygon = 40
Formula used:
Number of diagonals in the polygon = n(n – 3)/2
Where n is the number of sides of polygon.
Calculation:
Number of diagonals = 40 × (40 - 3)/2
⇒ 740
∴ number of diagonals is 740
