Question

As side of our triangle below has extended to form an exterior angle of 149°. find a value of x

Answer 1

Given data:

The given angle is ∠1=149°.

The expression for linear pair is,

`\angle1+x=180^(\circ)`

Substitute the given value in the above expression.

`\begin{gathered} 149^(\circ)+x=180^(\circ) \\ x=31^(\circ) \end{gathered}`

Thus, the value of x is 31°.