Question

A side of the triangle below has been extended to form an exterior angle of 157º. Findthe value of x.

Answer 1

The exterior angle of the triangle is the sum of two opposite angles.

`\begin{gathered} 157^(\circ)=48^(\circ)+x \\ x=109^(\circ) \end{gathered}`

Thus, the reequired value of x is 109 degrees.