Question

qual a soma dos ângulos internos de um pentágono​

Answer 1

$\large\boxed{\begin{array}{l} \rm{S_i = (n - 2) \cdot180 {}^{ \circ} } \\ \rm{S_i = (5 - 2) \cdot180 {}^{ \circ} } \\ \rm{S_i = 3 \cdot180 {}^{ \circ} } \\ \huge \boxed{ \boxed{ \boxed{ \boxed{ \rm{S_i = 540 {}^{ \circ} }}}}}\end{array}}$