Question

Observe atentamente a figura acima: *


=80° e y=30°

x=40° e y=30°

x=30° e y=60°

x=120° e y=60°

x=30° e y=40°

​

Answer 1

$\boxed{\begin{array}{l}\sf 120^\circ+30^\circ+x=180^\circ\\\sf x=180^\circ-120^\circ-30^\circ\\\sf x=30^\circ\\\sf 30^\circ+y+80^\circ+60^\circ+30^\circ+120^\circ=360^\circ\\\sf320^\circ+y=360^\circ\\\sf y=360^\circ-320^\circ\\\sf y=40^\circ\end{array}}$