Isotomic Transformation with Respect to a Family of Triangles

  • Helena KonculEmail author
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 809)


The isotomic conjugate of an arbitrary point P with respect to a given triangle \(\triangle ABC\) is the intersection point \(P^{'}\) of the isotomic lines relative to the cevians through the point P. Furthermore, the isotomic transformation of a geometric object is defined by finding isotomic conjugates with respect to a triangle \(\triangle ABC\) of all points on the geometric object. The isotomic transformation is a quadratic transformation for which various properties are known. In this article the isotomic transformation will be applied to a given fixed point P with respect to a one-parameter family of triangles \(\triangle ABC_i\), such that two vertices \(A,\ B\) are fixed and the third vertex \(C_i\) lies on a geometric object. It will be shown that this new transformation is a cubic transformation and some properties will be stated.


Isotomic conjugate Family of triangles Cubic transformation Barycentric coordinates 


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© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  1. 1.University of Zagreb Faculty of Civil EngineeringZagrebCroatia

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