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pons' as•i•no'rum

Pronunciation: (as"u-nôr'um, -nōr'-), [key]
a geometric proposition that if a triangle has two of its sides equal, the angles opposite these sides are also equal: so named from the difficulty experienced by beginners in mastering it. Euclid, 1:5.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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