Rotations of order 4, no reflections, without a square

The remaining patterns are numbered 61, which implies that one more further question needs to the answered.

The first group are examples of patterns with all angles multiples of 90 degrees. An example of two of these are:

The number in this group is 18, which is 29% of the total. For the final selection, see page.

The second group are examples of patterns with all angles not multiples of 90 degrees. An example of two of these are:

The number in this group is 43, which is 70% 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.