The On-Line Encyclopedia of Bongard Problems

Tetrahedron projected on the box plane vs. not so.

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	CROSSREFS	`Adjacent-numbered pages: BP246 BP247 BP248 BP249 BP250 * BP252 BP253 BP254 BP255 BP256`
	KEYWORD	`traditional`
	CONCEPT	`3d_solid (info \| search)`
	AUTHOR	`Andreas Gunnarsson`

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