Question

find the measure of the missing angle. answer attempt 1 out of 2 a =

Explanation:

Step1: Recall linear - pair property

The two angles form a linear - pair. The sum of angles in a linear - pair is 180°.
Let the missing angle be \(a\) and the given angle be 31°. So, \(a + 31^{\circ}=180^{\circ}\).

Step2: Solve for \(a\)

Subtract 31° from both sides of the equation: \(a=180^{\circ}- 31^{\circ}\).
\(a = 149^{\circ}\)

Answer:

\(149^{\circ}\)