单词	incentre
释义	incentre /ˈɪnsɛntə / (US incenter) noun Geometry The centre of the incircle of a triangle or other figure.Therefore, the hexagon lies on a circle centered at the incenter of that triangle.... The results of one such program, SIXTRI, suggested that the incenters of the small triangles formed by three intersecting cevians through special points, lie on an ellipse, while their circumcenters lie on a conic. Through each of its vertices draw a line perpendicular to the line joining that vertex with its incenter P. The four lines form a cyclic quadrilateral ABCD with perpendicular diagonals that pass through P.
随便看	petty cash book petty constable petty custom petty farm petty god petty goddess petty juror petty jury petty larceny petty-minded petty officer petty rent petty rice Petty, Richard petty sessions petty spurge petty treason petty whin petulance petulancy petulant petulantly petulcous petune petunia

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