Question

Question was provided via image upload.

Explanation:

Step1: Recall angle - sum property

The sum of interior angles of a triangle is 180°.

Step2: Set up equation

Let the unknown angle be \(a\). Then \(a + 70^{\circ}+50^{\circ}=180^{\circ}\).

Step3: Solve for \(a\)

\(a=180^{\circ}-(70^{\circ} + 50^{\circ})=180^{\circ}-120^{\circ}=60^{\circ}\).

Answer:

\(60^{\circ}\)