1)Dr. Veselin Nenkov, 2)Mr. Stanislav Stefanov
Researcher ID AAB-5776-2019 “Nikola Vaptsarov” Naval Academy 73, Vasil Drumev St. Varna, Bulgaria
Technical University – Sofia
Abstract. New geometric connections between different notable points in the quadrilateral are considered in the paper. It is proved that the lines, determined by three pairs of notable points are concurrent. Also, connections between notable points in the quadrilateral, generated by the transformations isogonal conjugate and complement are discussed.
Keywords: quadrilateral; notable point; line; isogonal conjugate; complement
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