incircle
Noun

incircle (plural incircles)

  1. (geometry) A circle within a polygon, especially a triangle, that is tangent to each side.
    • 2003, Clark Kimberling, Geometry in Action: A Discovery Approach Using the Geometer's Sketchpad, page 16 ↗,
      To construct the incircle of ΔABC, we need the center of the circle and a pass-through point.
    • 2005, István Reiman, International Mathematical Olympiad: 1959-1975, page 51 ↗,
      Having constructed K, the incircle of the quadrilateral can be easily constructed since it is tangent to BA and BC.
    • 2012, Tom M. Apostol, Mamikon A. Mnatsakanian, New Horizons in Geometry, Mathematical Association of America, page 106 ↗,
      For example, in Figure 4.2a only two edges of the polygon are tangent to the incircle. The other four edges do not even touch the incircle, but their extensions, shown by dotted lines, are tangent to the incircle.
Synonyms Related terms Translations
  • French: cercle inscrit
  • German: Inkreis
  • Portuguese: círculo inscrito
Verb

incircle (incircles, present participle incircling; past and past participle incircled)

  1. Archaic form of encircle#English|encircle.



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