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Search: ex:EX9216
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BP255 Three pairs of parallel and non-collinear pieces of straight lines, each pair with a different slope vs. not so.
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CROSSREFS

Adjacent-numbered pages:
BP250 BP251 BP252 BP253 BP254  *  BP256 BP257 BP258 BP259 BP260

KEYWORD

traditional

CONCEPT feature_cluster (info | search),
cluster (info | search),
three (info | search),
parallel (info | search)

AUTHOR

Andreas Gunnarsson

    page 1

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