Answer: с. 9
Explanation:
The number of diagonals can be found with this formula:
Number of diagonals = n(n-3)/2
Number of diagonals = 6(6-3)/2
Number of diagonals = 6(3)/2
Number of diagonals = 6(1.5)
Number of diagonals = 9
8.6m questions
11.3m answers