How many diagonals of the tridecagon?

Answer 1

A tridecagon has 13 sides. The formula for calculating the number of diagonals in a polygon is given by (\frac{n(n-3)}{2}), where (n) is the number of sides. For a tridecagon, substituting (n = 13) gives (\frac{13(13-3)}{2} = \frac{13 \times 10}{2} = 65). Thus, a tridecagon has 65 diagonals.