Question

find the missing angle measure.

Explanation:

Step1: Use the triangle angle - sum theorem

The sum of the interior angles of a triangle is \(180^{\circ}\). So, \(x + x+ x=180\).

Step2: Solve the equation

Combine like terms: \(3x = 180\). Then divide both sides by 3: \(x=\frac{180}{3}\).

Answer:

\(x = 60\)