Geodesic
Oriented angles, generalized pedal triangles and generalized Simson lines
Matematičeskoe obrazovanie, Tome 104 (2022) no. 4, pp. 2-10

Voir la notice de l'article provenant de la source Math-Net.Ru

In the article, with the help of oriented angles, the concepts of a generalized pedal triangle and a generalized Simson's line are introduced. For the newly introduced concepts, several properties are proved that are analogous to those of pedal triangles and the Simson line. 
@article{MO_2022_104_4_a0,
     author = {A. N. Afanasyev},
     title = {Oriented angles, generalized pedal triangles and generalized {Simson} lines},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {2--10},
     publisher = {mathdoc},
     volume = {104},
     number = {4},
     year = {2022},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2022_104_4_a0/}
}
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A. N. Afanasyev. Oriented angles, generalized pedal triangles and generalized Simson lines. Matematičeskoe obrazovanie, Tome 104 (2022) no. 4, pp. 2-10. http://geodesic.mathdoc.fr/item/MO_2022_104_4_a0/