Question

find the measure of the missing angle.

Explanation:

Step1: Recall angle - sum property

The sum of angles on a straight - line is 180°.

Step2: Set up an equation

Let the missing angle be $\theta$. We have $\theta+26^{\circ}=180^{\circ}$.

Step3: Solve for the missing angle

$\theta = 180^{\circ}-26^{\circ}=154^{\circ}$.

Answer:

$154^{\circ}$