1948. Gergonne-Nagel Conic

1875. Same Centers

 1. ) Let  and  be the orthocenter and Nagel's point of . Let  be the projections of  on .

*  and  have same incenter.

2.) Let  be the symmedian point of . Let  be the projections of  on perpendicular bisectors of 
**  and  have same centroid.

1856. A Construction For Barycentric Cube Of Nagel's Point

1792. A Locus Problem

1734. Circle From Nagel's Points

1539.