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Flexagons: Fun. I first got to play with them back in the 60s. I always wanted a flexagon business card.
I still have a whole batch of flexagons (hexa- and tetra-) I made in the late ’60s-early ’70s. All the types Martin Gardner described in detail except the flexatube, and one or two more I worked out how to make.
Brand new stuff to me. Never seen or heard of them before
Hexaflexagons are prominently featured in Piers Anthony’s book “OX”.
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