That artistic genius Slug Signorino created a work of art that rivals Leonardo’s in showing examples of phi. I am a little confused as to the line AB. Is this example showing AB/AC=AC/BC or is it really showing AC/BC=BC/AB? Perhaps the points are labeld incorrectly and they should be B,C,A from top to bottom? Or maybe its just me.
You are correct. Slug, who draws disgusting stuff with no regard for taste, seemingly has got the line wrong.
Correction is in process, I think. I hope.