Ron Hodgin wrote: > > Can anyone assist me in finding Euclid's 47th Prop. Am doing some research > but can't find any info on this.
Whoa! No info. on this? I can't imagine that you couldn't find any information because Book 1, proposition 47 is the Pythagorean Theorem, proven with the famous windmill proof. Of course, it is not stated in the familiar c^2=a^2 + b^2. The translation I have states: In right angled triangles the square on the side subtending the right angle is equal to the squares on the sides containing the right angle. I suggest going to a library and getting a copy of book1 of the elements if you are interested in Euclid's proof.