## {3,13} pentiamond 
## from Marek14's post in HyperRogue discord
h2.
angleunit(2*pi/13)
# the line below lets us specify internal angles
angleofs(pi)
distunit(edge(3,13))
tile(1,2,1,3,1,2,1,1,1,3,1,3,1,1)
c(0,0,0,6,0)
c(0,1,0,1,0)
c(0,2,0,2,0)
c(0,3,0,4,0)
c(0,5,0,5,0)