Question

galera alguém me ajuda eu preciso da resposta correta​

Answer 1

Resposta: Letra C)

d=diagonais

$d=\frac{n(n-3)}{2}\\\\d=\frac{6(6-3)}{2}\\\\d=\frac{6*3}{2}\\\\ d=\frac{18}{2}\\\\d=9$

Answer 2

$\boxed{ \boxed{ \boxed{ \boxed{ \: \maltese \: \sf alternativa~(C) \: 9 \: diagonais}}}}$

$\sf \colorbox{blue}{explicacão \: passo \: a \: passo : }$

$\large \boxed{ \begin{array}{l} \rm \: d = \dfrac{n.(n - 3)}{2} \\ \\ \rm \: d = \dfrac{6.(6 - 3)}{2} \\ \\ \rm \: d = \dfrac{6 \: . \: 3}{2} \\ \\ \rm \: d = \dfrac{18}{2} \\ \\ \boxed{ \rm d = 9} \end{array}}$