incircle

Noun

 * 1)  A circle within a polygon, especially a triangle, that is tangent to each side.

Usage notes
A triangle always has an incircle, whose centre (the ) is the point of concurrence of the angle bisectors. A polygon that has an incircle is called a or  and is said to be.

Translations

 * Bulgarian: вписана окръжност
 * Chinese:
 * Cantonese: 內接圓, 內切圓
 * Mandarin: ,
 * Finnish: sisään piirretty ympyrä, sisäympyrä
 * French: cercle inscrit
 * German:
 * Greek:
 * Hungarian:
 * Japanese:
 * Korean:
 * Portuguese: círculo inscrito
 * Swedish: invändig tangeringscirkel
 * Vietnamese: đường tròn nội tiếp