A square has two diagonals (lines that run from one corner to a different corner, but not between two corners on the same edge). For the four-number case, we can do 12 + 34 = 43 + 2 + 1. For the ...
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This engraved wood block was likely ...
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