Geodesic
Oriented angles, generalized pedal triangles and generalized Simson lines
Matematičeskoe obrazovanie, no. 4 (2022), pp. 2-10 Cet article a éte moissonné depuis la source Math-Net.Ru

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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. 
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     author = {A. N. Afanasyev},
     title = {Oriented angles, generalized pedal triangles and generalized {Simson} lines},
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     url = {http://geodesic.mathdoc.fr/item/MO_2022_4_a0/}
}
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A. N. Afanasyev. Oriented angles, generalized pedal triangles and generalized Simson lines. Matematičeskoe obrazovanie, no. 4 (2022), pp. 2-10. http://geodesic.mathdoc.fr/item/MO_2022_4_a0/

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