Question

given stv, use the protractor to measure ∠stv and ∠utv. also determine the sum of two angle measurements. move the protractor using the control blue dot. rotate / scale the protractor using the green dot. you may shift or zoom the canvas using your mouse.

Explanation:

Step1: Place protractor center

Place the center of the protractor on point $T$.

Step2: Align protractor base - line

Align the base - line of the protractor with one of the rays of the angle (say $TV$).

Step3: Measure $\angle STV$

Read the measurement where the ray $TS$ intersects the protractor scale. Let's assume the measure of $\angle STV=\alpha$.

Step4: Measure $\angle UTV$

Read the measurement where the ray $TU$ intersects the protractor scale. Let's assume the measure of $\angle UTV = \beta$.

Step5: Calculate sum of angles

The sum of the two - angle measures is $\alpha+\beta$.

Answer:

The sum of the measures of $\angle STV$ and $\angle UTV$ is the sum of the two values obtained from the protractor measurements. (Since no actual measurements are given in the image, we can't give a numerical answer, just the process).