Hi Beth,
You raise a very good point. Any pattern that can be reflected in two
mirrors at right angles can also be rotated 180 degrees and still look the
same. The type of patterns that I am looking for can be rotated and look
the same but do not have any mirror reflections - like a pinwheel. Thank
you for making this observation and helping me clarify what I am looking
for.
Kind regards,
Veronika
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