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[tan-juh n-see] /ˈtæn dʒən si/
the state of being tangent.
Origin of tangency
First recorded in 1810-20; tang(ent) + -ency Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Historical Examples
  • It is not certain, for instance, whether Euclid meant that the circles could not cut at some other point than that of tangency.

    The Teaching of Geometry David Eugene Smith
  • An angle formed by a tangent and a chord drawn from the point of tangency is measured by half the intercepted arc.

    The Teaching of Geometry David Eugene Smith
  • The points of tangency, in Figure 54, become a decorative feature of the design.

    Industrial Arts Design William H. Varnum

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