Build shapes only with square faces.
Build Cubes & Polycubes

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What symmetries does a cube have?
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What are tetracubes? How many are there? What is the Soma Cube and what are packing problems?
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What are the Necker Cube, the Tesseract and The Kaaba?
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What is square-set timbering? Where was it first used? What other shapes fill 3D space?
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How and why did cubes influence the work of George Braque and Pablo Picasso?
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What properties of the cube make it such a ubiquitous shape across the arts and sciences? What are the most iconic cubic objects?
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How can you devise a game or puzzle using cubes as a fundamental feature?