Tangency is a 8 letter English word. It's valid Scrabble word worth 14 points. It's valid Words with friends word worth 17 points.
You can make 179 anagrams from letters in tangency (acegnnty).
First recorded in 1810-20; tang(ent) + -ency
The points of tangency, in Figure 54, become a decorative feature of the design.
An angle formed by a tangent and a chord drawn from the point of tangency is measured by half the intercepted arc.
It is not certain, for instance, whether Euclid meant that the circles could not cut at some other point than that of tangency.
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