Discussione:Teorema delle corde
There seems to be a mistake in Book 2 Prop 5. You still need to add the area of the smaller triangle. I got CB^2 = CD^2 +DBxAD + DBxCD. I do not know if I did this correctly.
There seems to be a mistake in Book 2 Prop 5. You still need to add the area of the smaller triangle. I got CB^2 = CD^2 +DBxAD + DBxCD. I do not know if I did this correctly.