Adjacent Non-Supplementary Angles

This TV and antenna form a pair of non-adjacent non-supplementary angles. Adjacent angles share a line or ray, which A and B do. A and B are also non-supplementary because combined, they are not equal to 180 degrees. This TV is specific to the broadcasting industry and Televisions are used everywhere to watch shows and movies.

I found this image online at http://www.andrewclem.com/Archives/Post.php?2009/06/12st.html