2 & 3 are showing the base curves for the inside and outside starting point if the form. Both the inside and outside outline starting curves are made up of a set of 8 tangential arcs.
Added by David Hines at 1:20am on October 23, 2015
an't remember it) that will only give you the resulting whole number that results from any given division...modulus division will give the exact opposite, or only the fractions of numbers that result. In code they would be forward slash, back slash, and percent symbol, respectively. That's the case for VB and most other languages as well...here's a simple example...
8/3 = 2.66666
8\3 = 2
8%3 = 0.6666
HTH…