Question

e o triângulo quantas diagonais tem ? é 0

Answer 1

D = n(n-3)/2
D = 3.(3-3)/2
D = 3.0/2
D = 0/2 
D = 0

Answer 2

$d = \dfrac{n \cdot(n - 3)}{2}$

$d = \dfrac{3 \cdot(3 - 3)}{2}$

$d = \dfrac{3 \cdot0}{2}$

$d = 0$