Re: [math-fun] Estimating the aspect ratio of a rectangle

That's pretty much how I decide if I'm happy with the equilateral triangle I just tried to draw. —Dan ----- ... To decide by eye whether octagon ABCDEFGH is regular, hold it so that segment AB is horizontal, and see if the octagon appears to have bilateral symmetry. Then hold it so that segment AE is vertical, and see if it still appears to have bilateral symmetry. ... -----