Charakteristische Dreieckpunkte in der projektiv-erweiterten hyperbolischen Ebene
Fájlok
Dátum
2007-12-01
Folyóirat címe
Folyóirat ISSN
Kötet címe (évfolyam száma)
Kiadó
Absztrakt
Some basic planimetric constructions regarding segments, angles and triangles are shown in the Cayley-Klein model of the hyperbolic plane. Relationship with the situation in the Euclidean plane is given. H-triangles are classified considering the location of their vertices and sides with respect to the absolute. There are 28 types of triangles. It is shown that there exist 12 pairs of dual triangles, while 4 types of triangles are dual to themselves. For every type of triangle the existence and number of the characteristic points are determined. Few examples of triangles with construction of their characteristic points, incircles and circumcircles are given.
Leírás
Kulcsszavak
Cayley-Klein model of the hyperbolic plane, classification of H-triangles, dual triangles, characteristic points of the triangle
Forrás
Teaching Mathematics and Computer Science, Vol. 5 No. 2 (2007)
, 299-315