Playing with pentagons and triangles

On a very long train ride from Buffalo to Albuquerque, I ended up chatting with a rapper on his way back to LA.  We both had a lot a hours to fill so I showed him some of my polygon programs.  Nearly every time I play with TileLand I end up creating something new (at least to me).  This time was no different as you can see from the picture on the left.

This pattern with pentagons and triangles started out as a big 30-sided polygon (constructed by alternating pentagons and triangles) and slowly turned into a triangular grid of green triangles that has been augmented with zig-zag spacers that resemble purple and red dresses. 

I'm not yet finished with playing with the fruits of this play.  I'm going to attempt to make something different with the E shaped white space.  The interesting thing about this E is that it can be completely surrounded by polygons by inserting another pentagon where you have the two kissing red triangles. Check back in a couple of days and I should have the new pattern completed.

 Here is a blurred version to use as a background.  One of these days I'll have to eventually address the idea of colours--but that day is not here yet. :)