Most hobbies don't use terms like "Quadratic tesselations".  OURS does. :laugh:  A quadrangle is a quadrangle.  I watch to much public television.:lol:

I cannot save the world. Only my little piece of it. If we all act together, we can save the world.--Nelson Mandela
An  inconsistent hobgoblin is the fool of little minds
Taking "Just do it" to a whole new level!