Original scientific paper
The focus and the median of a non-tangential quadrilateral in the isotropic plane
Vladimir Volenec
; Department of Mathematics, University of Zagreb, Zagreb, Croatia
Jelena Beban-Brkić
; Department of Geomatics, Faculty of Geodesy, University of Zagreb, Zagreb, Croatia
Marija Šimić
; Faculty of Architecture, University of Zagreb, Zagreb, Croatia
Abstract
In this paper non-tangential quadrilaterals in the isotropic plane are studied.
A quadrilateral is called standard if a parabola with the equation
$x=y^2$ is inscribed in it. The properties of the standard
quadrilateral related to the focus and the median of the
quadrilateral are presented. Furthermore, the orthic of the
quadrilateral is introduced.
Keywords
isotropic plane; non-tangential quadrilateral; parabola; focus; median; orthic
Hrčak ID:
53213
URI
Publication date:
10.6.2010.
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