[riferimenti agli Oggetti Matematici]
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fraction
percent
ratio
denominator
numerator
reciprocal
mathworld subject fractions
reduced fraction
indexes
factor of proportionality
proportional
directly proportional
division
units & measures
polygon vertices (-1,2),(3,-1),(4,3),(0,5), polygon vertices (-2,4),(6,-2),(8,6),(0,10)
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