Question

Masura unghiului unui pentagon regulat este egala cu


dau coroana

Answer 1

 

$\displaystyle\bf\\Pentagonul~are~5~laturi~si~5~varfuri.\\\\n=5\\\\Folosim~formula:\\\\masura~unghiului~unui~poligon~regulat~este:~~(n-2)\times \frac{180}{n}~grade\\\\Rezolvare:\\\\(5-2)\times \frac{180}{5}=3\times36=\boxed{\bf108^o}$