# Regular Bimorphic Tilings of the second order (2)

Hexagons and triangles are not as interesting as squares and triangles. The possible combinations at a vertex are: HHH, HHTT, HTHT, HTTTT and TTTT.

If we restrict ourselves to HHTT and HTHT we get:

but if we allow ourselves to use HTTT as well, you can pretty well place hexagons anywhere and fill in the gaps with triangles eg:

As we have seen, there is only one tiling with octagons and squares and it is first order.