Question

what is the measurement of this angle? save answer

Explanation:

Step1: Determine the scale reading

The protractor has two sets of scales. We need to read the scale that starts from \(0^{\circ}\) where the arm of the angle begins.

Step2: Identify the correct scale

Looking at the angle, one arm is at \(90^{\circ}\) and the other arm is at \(160^{\circ}\) on the outer - scale (since the angle is measured from the \(0^{\circ}\) mark on the left - hand side of the protractor). But wait, no, actually, if we consider the inner - scale (the scale that is more relevant as the angle is measured from the left \(0^{\circ}\) and we count the number of degrees between the two arms. The upper arm is at \(90^{\circ}\) and the lower arm is at \(20^{\circ}\) on the inner - scale. The measure of the angle is \(90^{\circ}-20^{\circ}\)

Answer:

\(70^{\circ}\)