Definition: 5.03: Ratio
A ratio is a certain type of condition with respect to size of two magnitudes of the same kind.
Modern Formulation
See ratio of real numbers.
Mentioned in:
Corollaries: 1
Definitions: 2 3 4 5 6 7 8 9
Proofs: 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
Propositions: 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59
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References
Bibliography
 Health, T.L.: "The Thirteen Books of Euclid's Elements  With Introduction and Commentary by T. L. Health", Cambridge at the University Press, 1968, Vol 1, 2, 3
Adapted from (subject to copyright, with kind permission)
 Fitzpatrick, Richard: Euclid's "Elements of Geometry"