Professor Polyhedron

Videos on polyhedra.

If you'd like to watch these videos in a logical order, I recommend you start with the playlist "Polyhedra - An Introductory Course"
https://www.youtube.com/playlist?list=PL_qfhoxEbs8PPuzju5HgP9BBLCHqwFq42

then continue with "Course in Non-Convex Polyhedra" (now complete)
https://www.youtube.com/playlist?list=PL_qfhoxEbs8NYL3g_NKqZUUsYT1J2KNT8