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BP25 Black figure is a triangle vs. black figure is a circle.
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COMMENTS

All small squares appearing in this problem are axis-aligned.

REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 222.

CROSSREFS

Adjacent-numbered pages:
BP20 BP21 BP22 BP23 BP24  *  BP26 BP27 BP28 BP29 BP30

KEYWORD

noisy, finished, traditional, bongard

CONCEPT outlined_filled (info | search),
feature_cluster (info | search),
cluster (info | search),
texture (info | search),
triangle (info | search)

WORLD

circle_square_eq-tri_small_outlines_one_fill [smaller | same | bigger]

AUTHOR

Mikhail M. Bongard

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