Question

a soma dos angulos internos de um quadrilatero e

Answer 1

A soma dos ângulos internos dos quadriláteros sempre será equivalente a 360°.

Answer 2

$\large\boxed{\begin{array}{l} \underline{ \boldsymbol{f\acute{o}rmula}} \\\huge\boxed{\boxed{\boxed{\boxed{\rm{ \tt S_i = (n - 2) \cdot180 {}^{ \circ} }}}}} \\ \\ \sf S_i = (4 - 2) \cdot180 {}^{ \circ} = 2 \cdot180 {}^{ \circ} = 360 {}^{ \circ} \\\huge\boxed{ \boxed{ \boxed{ \boxed{ \sf \dagger \red{ \maltese}~ \blue{alternativa~D}}}}} \end{array}}$