Question

what is the measure of the missing angle? 96 89 109 9

Explanation:

Step1: Recall angle - sum property

A straight - line forms an angle of 180°.

Step2: Set up the equation

Let the missing angle be $x$. We have $x + 91^{\circ}=180^{\circ}$.

Step3: Solve for the missing angle

$x=180^{\circ}-91^{\circ}=89^{\circ}$.

Answer:

89