Abstract
We find the unique smallest convex region in the plane that contains a congruent copy of every triangle of perimeter two. It is the triangle ABC with AB=2/3, ∠ B=60°, and BC≈1.00285.
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Chakerian, G. D. and Klamkin, M. S.: Minimal covers for closed curves, Math.Mag. 46 (1973), 55–61.
Croft, H. T., Falconer, K. J. and Guy, R. K.: Unsolved Problems in Geometry, Springer-Verlag, New York, 1991.
Eggleston, H. G.: Problems in Euclidean Space. Applications of Convexity, Pergamon, New York, 1957.
Kovalev, M. D.: A minimal convex covering for triangles (in Russian), Ukrain. Geom. Sb. 26 (1983), 63–68.
Post, K. A.: Triangle in a triangle: on a problem of Steinhaus, Geom. Dedicata 45 (1993), 115–120.
Schaer, J. and Wetzel, J. E.: Boxes for curves of constant length, Israel J. Math. 12 (1972), 257–265.
Steiner, J.: Sur le maximum et le minimum des figures dans le plan, sur la sphère et dans l'espace en général I, J. reine angew.Math. 24 (1842), 93–152: in German in Gesammelte Werke 2, 177–242.
Wetzel, J. E.: Boxes for isoperimetric triangles, to appear in Math. Mag.
Wetzel, J. E.: On Moser's problem of accommodating closed curves in triangles, Elem. Math. 27 (1972), 35–36.
Wetzel, J. E.: The smallest equilateral cover for triangles of perimeter two, Math.Mag. 70 (1997), 125–130.
Wetzel, J. E.: Triangular covers for closed curves of constant length, Elem. Math. 25 (1970), 78–82.
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Füredi, Z., Wetzel, J.E. The Smallest Convex Cover for Triangles of Perimeter Two. Geometriae Dedicata 81, 285–293 (2000). https://doi.org/10.1023/A:1005298816467
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DOI: https://doi.org/10.1023/A:1005298816467