Thirty years ago I wandered into a used book store and found an old beat up book. The book was an 1855 reprint of a 1813 book titled "The Elements of Geometry." I opened it up and slowly turned it pages, The Principles, Definitions, Postulates, Axioms, and then "The Propositions". I read the first one and knew I had a new old book. When I got home I realized it was the Elements of Euclid and placed it on my a bookshelf. I was busy working on a dissertation for a Ph.D. in Engineering and from time to time I would read a proposition or two. Never making it past Proposition 10. Every time I read it I would pull out a compass and straight edge to reproduce the proof.
Now I teach my two grade school daughters math and I know someday I will teach them geometry, maybe it would be cool if they knew the propositions. This channel is for them and everyone who wants to know geometry from the most incredible book written. An 1813 reprint of a series of 2000 year old book, The Elements of Euclid