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Search: concept:cross_section
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BP559 Cross section of a cube vs. not cross section of a cube
?
(edit; present; nest [left/right]; search; history)
COMMENTS

All examples are solid black shapes.


This problem is absurdly hard. It makes a good extreme example. - Aaron David Fairbanks, Nov 23 2020

CROSSREFS

Adjacent-numbered pages:
BP554 BP555 BP556 BP557 BP558  *  BP560 BP561 BP562 BP563 BP564

KEYWORD

hard, precise, allsorted, notso, stretch, challenge, left-narrow, perfect

CONCEPT cube (info | search),
cross_section (info | search)

WORLD

fill_shape [smaller | same | bigger]

AUTHOR

Leo Crabbe

BP816 Cross section of a cylinder vs. not cross section of a cylinder
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP811 BP812 BP813 BP814 BP815  *  BP817 BP818 BP819 BP820 BP821

KEYWORD

precise, notso, stretch, unstable, perfect

CONCEPT cross_section (info | search)

WORLD

fill_shapes [smaller | same | bigger]

AUTHOR

Leo Crabbe

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