Thank you, quiltsRfun and JeanieG, for your comments on Triangulation software for the HSTs; those are not my favorite thing, to put it mildly. I had not heard of this software so I found it at Connecting Threads and watched the video. I just ordered it, and best of all, it is 50% off, (at least today), if anyone else is interested. It is very reasonable even at full price, so I was very happy to find it at the 50% discount. Meanwhile I have the Easy Angle Ruler to get started with Part 1.