Question

problem 1 here are three intersecting lines. determine the missing angle measurements. 125° 135° 45° 80°

Explanation:

Step1: Recall angle - sum property of a straight - line

The sum of angles on a straight - line is $180^{\circ}$.

Step2: Calculate the missing angle

Let the missing angle be $x$. We know that $x + 80^{\circ}=180^{\circ}$. Solving for $x$, we get $x=180^{\circ}-80^{\circ}=100^{\circ}$.

Answer:

$100^{\circ}$