Ratio of Similarity

Ratio of Similarity

The coefficient k of proportionality between the lengths of an initial geometric figure and the corresponding lengths of the image of the initial figure by a similarity.

  • To determine the ratio of similarity, all that is required is two points A and B and their images, A′
    and B′.
    Therefore, the ratio of similarity is: k = \(\dfrac{\textrm{m}\overline{\textrm{AB}}}{\textrm{m}\overline{\textrm{A’B’}}}\).
  • Synonym for constant of proportionality.

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