Kiepert Triangles in an Isotropic Plane
DOI:
https://doi.org/10.5644/SJM.07.1.08Abstract
In this paper the concept of the Kiepert triangle of an allowable triangle in an isotropic plane is introduced. The relationships between the areas and the Brocard angles of the standard triangle and its Kiepert triangle are studied. It is also proved that an allowable triangle and any of its Kiepert triangles are homologic. In the case of a standard triangle the expressions for the center and the axis of this homology are given.
2000 Mathematics Subject Classification. 51N25
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References
R. H. Eddy, R. Fritsch, The conics of Ludwig Kiepert: a comprehensive lesson in the geometry of the triangle, Math. Mag., 67 (1994), 188–205.
Z. Kolar–Begovi´c, R. Kolar–Super, J. Beban–Brki´c, V. Volenec, ˇ Symmedians and the symmedian center of the triangle in an isotropic plane, Math. Pannonica, 17 (2006), 287–301.
Z. Kolar–Begovi´c, R. Kolar–Super, V. Volenec, ˇ Brocard angle of the standard triangle in an isotropic plane, Rad HAZU 503 (2009), 55-60.
R. Kolar–Super, Z. Kolar–Begovi´c, V. Volenec, J. Beban–Brki´c, ˇ Metrical relationships in a standard triangle in an isotropic plane, Math. Commun., 10 (2005), 149–157.
R. Kolar–Super, Z. Kolar–Begovi´c, V. Volenec, J. Beban–Brki´c, ˇ Isogonality and inversion in an isotropic plane, Int. J. Pure Appl. Math., 44 (2008), 339-346.
H. Sachs, Ebene isotrope Geometrie, Vieweg–Verlag, Braunschweig/Wiesbaden, 1987.
K. Strubecker, Geometrie in einer isotropen Ebene, Math. Naturwiss. Unterricht, 15 (1962), 297–306, 343–351, 385–394.
V. Volenec, Z. Kolar–Begovi´c, R. Kolar–Super, ˇ Steiner’s ellipses of the triangle in I2, Math. Pannonica, (to appear)