Question

Na figura, a semirreta OB é a bissetriz de AOC. Então x-y vale:​

Answer 1

$\boxed{\begin{array}{l}\sf y=24^\circ\\\sf 18^\circ+x+24^\circ+24^\circ=180^\circ\\\sf x+66^\circ=180^\circ\\\sf x=180^\circ-66^\circ\\\sf x=114^\circ\\\sf x-y=114^\circ-24^\circ\\\sf x-y=90^\circ\end{array}}$