Recent content by Konstantinos88

Yes, exactly this: The phrase, quod erat demonstrandum, is a translation into Latin from the Greek ὅπερ ἔδει δεῖξαι (hoper edei deixai; abbreviated as ΟΕΔ). https://en.wikipedia.org/wiki/Q.E.D.

That is my Greek-Euclidean proof that all triangles are isosceles. Any doubts?