Sketch 23: Pattern with squares and octagons

While exploring some areas around Isfahan I found a remote village Ashtarjan with a very old Ilkhanid mosque Jameh Mosque of Ashtarjan ( 1315–16 ). The mosque had some simple geometric decorations. Here is one of them. Geometric pattern with squares and octagons. In this short sketch we will analyze and reconstruct this pattern. This …

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