Answer:
122
Step-by-step explanation:
First, we need to find the following angle
So, by the interior angle theorem, this angle is equal to
![\begin{gathered} \angle AOB=(1)/(2)(AB+ED) \\ \\ \angle AOB=(1)/(2)(50+66) \\ \\ \angle AOB=(1)/(2)(116) \\ \\ \angle AOB=58 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/b4o17pmj3sy235g0rognegizcsdg0imhn8.png)
Then, angle 5 and angle AOB form a line, so they sum 180 degrees and we can calculate the measure of angle 5 as
![\begin{gathered} \angle5+\angle AOB=180 \\ \angle5=180-\angle AOB \\ \angle5=180-58 \\ \angle5=122 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/jfy5x9tk84oajzmebozgoekmwbyq5xr6y6.png)
Therefore, the answer is 122.