Definition of incircle in English:

incircle

noun

Geometry
  • A circle inscribed in a triangle or other figure so as to touch (but not cross) each side.

    • ‘The three lines through the incircle and the circumcircle of triangles AIB, BIC, and CIA meet at a point.’
    • ‘The point where the incircle and the nine point circle touch is now called the Feuerbach point.’
    • ‘Rectangle is a cyclic shape with the circumcenter at the intersection of the diagonals, both of which are diameters of the incircle q.’

Pronunciation:

incircle

/ˈinˌsərk(ə)l/