- Cosmin Pohoata, Remarks on the Japanese Theorem, Arhimede Magazine, 1 (2007), 6-9. (in Romanian) - an English version will be attached; this article was awarded with the First Prize and Gold Medal at the International Arhimede Symposium in Pure and Applied Mathematics, held in Bucharest, 2008.
The Japanese theorem states that the incenters of triangles ABC, BCD, CDA, DAB of a cyclic quadrilateral ABCD are the vertices of a rectangle. We discuss some results related to Wilfred Reyes’ proof from An Application of Thebault’s Theorem, Forum Geom., 2 (2002), 183-185.
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