1822. Jerabek Hyperbola To Brocard Axis

1821. Jerabek Hyperbola To Euler Line

1820.

1819. Myakishev Associate Triangles

1818. A Circle Centered At Symmedian Point

1817.

1816. Tripling The Nine Point Circle

1815. A Construction For X(3129)=X(13) Ceva Conjugate of X(6)

1814. Concyclic Points Related To K007-Lucas Cubics

1813. A Construction For X(37517)

1812. More On Lemoine Type Circles

1811. Concyclic Isodynamic Points Centered at Symmedian Point

1810. Another Circle Related to Centroid

1809. A Construction For X(30331)

1808. Concyclic Points Related to Centroid

1807. Circles Through Isodynamic Points

 Let S=X(15)-1st Isodynamic point of ABC.

Sa,Sb,Sc are X(100) points of SBC, SCA, SAB resp.

*S,Sa,Sb,Sc lie on same circle.

** If Sa,Sb,Sc are X(101) points of SBC, SCA, SAB resp. again S,Sa,Sb, Sc lie on same circle.

1806. Lemoine Type, A Circle centered at Circumcenter

1805. An Equilateral Triangle Inscribed in Circumcircle