Hello, I have been looking for years for a book in which a decagon is drawn, inside which one of the 72 cards or designs composed of the lines of three squares placed side by side and horizontally is arranged; I don't know if I am making myself understood.
a square, the base line of a second one, and the two upper and lower lines of a third one; it would be simpler if I could draw it, but I don’t know how to add images yet, this is my first message.
P.S. I couldn't find a place to introduce myself, please forgive me.
We have a belly button: