Maximum-Area Triangle in a Convex Polygon, Revisited

We revisit the following problem: Given a convex polygon P, find the largest-area inscribed triangle. We prove by counterexample that the linear-time algorithm presented in 1979 by Dobkin and Snyder [5] for solving this problem fails, as well as a renewed analysis of the problem. We also provide a counterexample proving that their algorithm fails finding the largest-area inscribed quadrilateral. Combined with the work in [2], [3], it follows that the algorithm is incorrect for all possible values of k.

keywords: Computational Geometry, Delaunay Triangulations, Quadtrees

Journal Article (peer-reviewed)

Ali Mohades, Ivor van der Hoog, Jérôme Urhausen, Maarten Löffler, Vahideh Keikha
Maximum-Area Triangle in a Convex Polygon, Revisited
Information Processing Letters
161, 105943, 2020
https://doi.org/10.1016/j.ipl.2020.105943

Archived Publication (not reviewed)

Ivor van der Hoog, Jérôme Urhausen, Maarten Löffler, Vahideh Keikha
Maximum-Area Triangle in a Convex Polygon, Revisited
1705.11035, 2017
http://arXiv.org/abs/1705.11035

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