Question

Find the number of diagonal of polygon of side
1. 4
2. 5
3. 10​

Answer 1

Answer:

2,5,35

Step-by-step explanation:

Number of diagonals = n(n-3)/2 (where n is the number of sides)

1. No. of diagonals = 4 × 1/2

= 2

2. No. of diagonals = 5 × 2/2

= 5

3. No. of diagonals = 10 × 7/2

= 35

HOPE THIS HELPS YOU.........