An (n - 2)2 sided figure has n diagonals. Find the number n diagonals for 25-sided figure
A
7
B
8
C
9
D
10
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
(n - 2)2 = 25
n - 2 = 25 = 5
n = 5 + 2
= 7
Source: Myschool Past Questions Archive (Record #31903)