Re-Directing Descartes' 1637 Multiplication Part 1

Part 2 at http://tube.geogebra.org/m/1471587[br][br]Toutube video at https://www.youtube.com/watch?v=-NEYhIITHP4
What happens when you drag the Multiplicand and/or the Multiplier onto the 'other side' of the Origin?

Information: Re-Directing Descartes' 1637 Multiplication Part 1