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BP1082 Shapes are congruent if (and only if) they are enclosed in the same space vs. not so.
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Adjacent-numbered pages:
BP1077 BP1078 BP1079 BP1080 BP1081  *  BP1083 BP1084 BP1085 BP1086 BP1087

KEYWORD

stub, precise, allsorted

CONCEPT iff (info | search)

AUTHOR

Leo Crabbe

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