Question

drag the yellow dot until $overleftrightarrow{ac}$ and $overleftrightarrow{df}$ are exactly parallel. afterwards, use the protractor to measure $angle cbe$ and $angle deh$. make sure the angle measurements are consistent with $overleftrightarrow{ac}$ and $overleftrightarrow{df}$ being parallel. move the line using the yellow dot. measure the angles with the protractor. you may shift or zoom the canvas using your mouse.

Explanation:

Step1: Drag the yellow - dot

Drag the yellow dot until $\overleftrightarrow{AC}$ and $\overleftrightarrow{DF}$ are parallel as per the instruction.

Step2: Use protractor

Place the protractor correctly on the angles $\angle CBE$ and $\angle DEH$.

Step3: Read measurements

Read the angle measurements accurately. According to the properties of parallel lines, if $\overleftrightarrow{AC}$ and $\overleftrightarrow{DF}$ are parallel, $\angle CBE$ and $\angle DEH$ are corresponding angles and should be equal.

Answer:

The measured values of $\angle CBE$ and $\angle DEH$ should be equal if $\overleftrightarrow{AC}$ and $\overleftrightarrow{DF}$ are parallel. The actual values will depend on the correct use of the protractor after making the lines parallel.