Question

what is the measurement of the angle shown below? 10° 100° 80° 180°

Explanation:

Step1: Determine the scale reading

When using a protractor, we check where the angle's terminal side aligns. The outer scale (since the angle is measured from the left - hand side zero mark of the protractor) shows that the angle aligns with the \(100^{\circ}\) mark.

Answer:

\(100^{\circ}\) (the second option)