Perhaps this is math’s revenge for you having tiled a hall in Hogwarts with pentagons. :)
But he didn’t say regular pentagons. Pentagon tiles shown here. Also, he did say that Hogwarts has non-Euclidean geometry.
Actually, my understanding was that he said it didn’t have geometry at all, only topology.
But he didn’t say regular pentagons. Pentagon tiles shown here. Also, he did say that Hogwarts has non-Euclidean geometry.
Actually, my understanding was that he said it didn’t have geometry at all, only topology.