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izvorni znanstveni rad · 2008

Osculating Circles of Conics in the Isotropic Plane

dr. sc. Mirela Katić Žlepalo, v. pred.

Sažetak

In the isotropic plane there are seven types of conics relative to their position to the absolute figure (F, f). The paper shows how to construct an osculating circle in any point of a real conic. In the Euclidean plane every conic has at least one real vertex, i.e.a point where hyperosculating circle exists. In the isotropic plane only real ellipses and hyperbolas of the 2nd type have two real vertices. For those types of conics are the hyperosculating circles constructed as perspective collinear images of a given conic with appropiately selected elements of collineation.

Ključne riječi

isotropic plane osculating circle vertex of a conics perspective collineation