Question

Calcule as diagonais de cada poligino 5 lados 8 lados 12 lados 16 lados 30 lados

Answer 1

Bom dia!!!

$d = \frac{n(n - 3)}{2} \\ d = \frac{5(5 - 3)}{2} \\ d = \frac{5 \times 2}{ 2} \\ d = 5 \\ \\ d = \frac{8(8 - 3)}{2} \\ d = \frac{8 \times 5}{2} \\ d = \frac{40}{2} \\ d = 20 \\ \\ d = \frac{12(12 - 3)}{2} \\ d = \frac{12 \times 9}{2} \\ d = \frac{108}{2} \\ d = 54 \\ \\ d = \frac{16(16 - 3)}{2} \\ d = \frac{16 \times 13}{2} \\ d = \frac{208}{2} \\ d = 104$

Espero ter ajudado! :)