Question

what is the value of c?

Explanation:

Step1: Recall angle - sum property

The sum of the angles in the given angle - composition is 80°.

Step2: Set up an equation

Let the unknown angle be \(c\). We have \(c + 31^{\circ}=80^{\circ}\).

Step3: Solve for \(c\)

Subtract 31° from both sides of the equation: \(c=80^{\circ}- 31^{\circ}\).

Answer:

49°