I sent this photo in to the MAA Found Math series, and it was published! This looks very much like a geometric dissection proof of the Theorem of Pythagoras, but in the form of a discarded foldable card table.
I sent this photo in to the MAA Found Math series, and it was published! This looks very much like a geometric dissection proof of the Theorem of Pythagoras, but in the form of a discarded foldable card table.