Question

e of the triangle below has been extended to form an exterior angle the value of $x$.
answer attempt 2 out of 2
$x =$

Explanation:

Step1: Find adjacent interior angle

The exterior angle and its adjacent interior angle are supplementary, so:
$180^\circ - 131^\circ = 49^\circ$

Step2: Sum of triangle angles is 180°

Use the triangle angle sum theorem to solve for $x$:
$x + 112^\circ + 49^\circ = 180^\circ$
$x = 180^\circ - 112^\circ - 49^\circ$
$x = 19^\circ$

Answer:

$19$