Question

find the measure of the missing angle. 25° a

Explanation:

Step1: Use the property of a straight line

The sum of angles on a straight line is \(180^{\circ}\). Let the unknown angle be \(a\).

Step2: Set up the equation

\(a + 25^{\circ}=180^{\circ}\)

Step3: Solve for \(a\)

\(a=180^{\circ}- 25^{\circ}\)
\(a = 155^{\circ}\)

Answer:

\(155^{\circ}\)