Abstract
We prove that two strictly convex bodies in the plane subtending the same angles at each of the points of two parallel straight lines and a big closed curve, must coincide.
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Supported by the Hungarian NSF, OTKA Nr. T4427, W015425 and F016226.
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Kurusa, Á. The shadow picture problem for nonintersecting curves. Geom Dedicata 59, 103–112 (1996). https://doi.org/10.1007/BF00181528
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DOI: https://doi.org/10.1007/BF00181528