1920. A Line Perpendicular To Euler Line

1919. Collinear Kosnita Points

1918. Myakishev Associate Triangles

1917. Myakishev Associate Triangles

1916. Centroids On Euler Line

1915. Collinear Points

1914. Circumcenters On Euler Line

1913. Concurrent Nine Point Circles

1912. Equilateral Triangle of NPC centers

1911. Conic of Inverse points

1910. Collinear Points (Devoted to Turkish people died in Earthquakes)

1909. Collinear Points(Devoted to Turkish people died in Earthquakes)

1908. Collinear Points(Devoted to Turkish people died in Earthquakes)

1907. An Equilateral Triangle(Devoted to Turkish people died in Earthquakes)

1906. An Equilateral Triangle Centered At X(3576)(Devoted to Turkish people died in Earthquakes)

1905. An Equilateral Triangle and X(14144)(Devoted to Turkish people died in Earthquakes)

1904. A Construction For X(14118)(Devoted to Turkish people died in Earthquakes)

1903. Triangles With Fixed Incenter(Devoted to Turkish people died in Earthquakes)

1902. Euler Line And Concyclic Points(Devoted to Turkish people died in Earthquakes)

1901. Collinear Nine-Point Centers

1900. Congruent Circles(Devoted to Turkish people died in Earthquakes)

1899. A Locus For K001-Neuberg Cubic (Part 5)

1898. Collinear Points

1897. Collinear Points

1896. Collinear Points