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arxiv 2104.04940 v4 pith:LZ4GNNTS submitted 2021-04-11 cs.CG

Dissecting the square into seven or nine congruent parts

classification cs.CG
keywords congruentninesevensquarecomputer-basedconvexdissectingdivided
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We give a computer-based proof of the following fact: If a square is divided into seven or nine convex polygons, congruent among themselves, then the tiles are rectangles.

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