Please watch this Numberphile video (7 minutes). I decided not to spend time on greek constructions in class, but you should know a bit of the history and main idea, and this is a nicely done enjoyable video.
Please read your text, pages 78-85. You can just do a gentle read over the bit about constructible numbers (pages 78-80 and 85), without diving deeply; these are nice to know about but I won’t consider it a topic of the course. Focus on pages 81-84 as a complement to Monday’s lecture.
Log into canvas and complete the associated reading quiz there.