Question

(14.03 lc)
what is the measure of the unknown angle?
n
120°
120°
180°
240°
260°

Explanation:

Step1: Recall angle - sum property

The sum of angles around a point is 360°.

Step2: Set up equation

Let the unknown angle be \(n\). We have \(n + 120^{\circ}=360^{\circ}\).

Step3: Solve for \(n\)

\(n=360^{\circ}- 120^{\circ}\).
\(n = 240^{\circ}\)

Answer:

240°