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BP160 Quadrilateral that is nearly a triangle vs. typical quadrilateral.
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CROSSREFS

Adjacent-numbered pages:
BP155 BP156 BP157 BP158 BP159  *  BP161 BP162 BP163 BP164 BP165

KEYWORD

perfect, traditional

CONCEPT imperfection_small (info | search),
number (info | search),
triangle (info | search)

WORLD

Multiple options:
[smaller | same | bigger],
quadrilateral_outline [smaller | same | bigger]

AUTHOR

Harry E. Foundalis

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