DOI: 10.36890/iejg.1820797 ISSN: 1307-5624

On Quadrilaterals Given by Angles in the Isotropic Plane

Ema Jurkin, Marija šimić Horvath, Vladimir Volenec
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In this paper, we study quadrilaterals $ABCD$ in the isotropic plane that are determined by the vertex angles $\alpha=\angle(DA,AB)$, $\beta=\angle(AB,BC)$, $\gamma=\angle(BC,CD)$ and a diagonal angle $\varepsilon=\angle(AC,BD)$. We obtain the loci of diagonal points and the envelope of the sides when only some of the angles are given.

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