Question

shortest formula for number of diagonal ​

Answer 1

Step-by-step explanation:

To find the total number of diagonals in a polygon, multiply the number of diagonals per vertex (n - 3) by the number of vertices, n, and divide by 2 (otherwise each diagonal is counted twice).

Answer 2

Step-by-step explanation:

Formula for finding the number of diagonals in a regular polygon is given by the formula:-

n(n - 3)/2