The ptolemy's theorem is based of of a man named Claudius Ptolemaeus he was born on the date of 100 C.E. and had died on the date of 170C.E. Claudius Ptolemaeus was multi-subject person He studied astronomy and became an astronomer he had also became a geographer and held the skill to provide information and also the techniques needed to form a map. This man has been huge contribution of knowledge for the world not only for the use of his mathematical skill but the production of the Almagest ,The Almagest was his mind but on paper. It consisted and was broken apart by 13 books each book are used to help one another it's like reading a normal book you have to read the first chapter to move on to the next. The first book consisted on the fundamentals
