Word.ws English Dictionary

incircle

incircle noun: a circle within a polygon, especially a triangle, that is tangent to each side. Also the archaic form of encircle.

incircle: a circle within a polygon, especially a triangle, that is tangent to each side
Image: jtico, Public domain, via Wikimedia Commons

Noun

incircle (plural incircles)

  1. A circle within a polygon, especially a triangle, that is tangent to each side.
    • To construct the incircle of ΔABC, we need the center of the circle and a pass-through point.2003, Clark Kimberling, Geometry in Action: A Discovery Approach Using the Geometer's Sketchpad, page 16
    • Having constructed K, the incircle of the quadrilateral can be easily constructed since it is tangent to BA and BC.2005, István Reiman, International Mathematical Olympiad: 1959-1975, page 51

Also used as

incircle is also the archaic form of encircle.

incircle meaning in Vietnamese

incircle in Vietnamese

the circle within a polygon that is tangent to each side
đường tròn nội tiếp

Synonyms of incircle

Forms of incircle

Noun
pluralincircles
Verb
third-person singular presentincircles
present participleincircling
past participleincircled
pastincircled

Origin of incircle

From in- + circle.

Questions about incircle

What does incircle mean?
Incircle means a circle within a polygon, especially a triangle, that is tangent to each side.
What is incircle in Vietnamese?
Incircle in Vietnamese is đường tròn nội tiếp. See Incircle meaning in Vietnamese.
What part of speech is incircle?
Incircle is a noun.
What is the plural of incircle?
The plural of incircle is incircles.

Words near incircle in the dictionary

  1. incipient
  2. incipiently
  3. incipients
  4. incipit
  5. incipits
  6. incircle
  7. incircled
  8. incircles
  9. incircling
  10. incircumscriptible
  11. incircumscription

Source and license

Adapted from Wiktionary: incircle (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-incircle.wav.

Cite this entry: “incircle.” Word.ws, https://word.ws/incircle. Based on Wiktionary, CC BY-SA 4.0.