Rotations of order 2 (but not four), with no reflection

The remaining patterns are numbered 51, which implies that one more further question needs to the answered.

The first group are examples of patterns with pentagons. An example of two of these are:

The number in this group is 18, which is 35% of the total. For the final selection, see page.

The second group are examples of patterns without pentagons. An example of two of these are:

The number in this group is 33, which is 64% of the total. For the final selection, see page.

v54

Tiling Search was created by Brian Wichmann, and is maintained by MIT Libraries, through support from the Aga Khan Documentation Center.