Hi fam, have a fulfilling day of Hermes/Mercurius (Mercredi) or Wotan/Odin (Wednesday/NL:Woensdag), chemical element Hg, mercury! How to Pythagoras 2.0: 1st Shalan theorem a² bluesquare+2ad 2whiterectangles+d² blacksquare=(a+d)² enlargedsquare For detailed derivation with many examples see ALT, pls.