Since angle 16 measures 139 degrees and is a supplementary angle with angle 17, we have the following equation:
[tex]139+\measuredangle17=180[/tex]
solving for angle 17, we get:
[tex]\begin{gathered} 139+\measuredangle17=180 \\ \Rightarrow\measuredangle17=180-139=41 \\ \measuredangle17=41\degree \end{gathered}[/tex]
therefore, the measure of angle 17 is 41 degrees
