Lots of patterns are built only with straight lines. But when you try to make a rounded line into a straight other things happens. If you are lucky a new pattern appear. Or a pattern you already know shows up! That happened to me. I started with straight lined pattern Gord (Sue Zanker). Then there appeared an oops and that became a straightlined Betweed. At least in my mind. It could also be someting else. Paradox is another patter with straight lines. But then I wanted to try Crescent Moon with straight lines. I think it came out as Dex! This is fun to do and I sure will try it again!