Question

find the measure of the missing angle. 43° label optional skill code: 1110101

Explanation:

Step1: Recall linear - angle property

Two angles on a straight - line sum to 180°.

Step2: Calculate the missing angle

Let the missing angle be $x$. Then $x + 43^{\circ}=180^{\circ}$, so $x = 180^{\circ}-43^{\circ}=137^{\circ}$.

Answer:

$137^{\circ}$