Question

measure ∠rst with the protractor and write your answer to the nearest degree. move the protractor using the central blue dot. rotate / scale the protractor using the green dot. you may shift or zoom the canvas using your mouse.

Explanation:

Step1: Align protractor

Align the center of the protractor with point S and the baseline of the protractor with ray ST.

Step2: Read measurement

Read the angle where ray SR intersects the protractor. The intersection is at approximately 70°.

Answer:

70°