Jean Power is well known for her designs with triangles and pentagons – here are some examples I made when trying out ideas from her latest book.
The numerous variations of the Rick Rack are amazing – see these Starflowers as well as the tulip in the last post. Jean gives instructions for the 5 petalled flower in the book, but I guessed that it would work just as well with other numbers, and made a six petalled one to show it. I’m sure you could add more petals as well, just haven’t had the time to try it! I would like to make a whole garden full of these.