[color=#999999]This activity belongs to the [i]GeoGebra book[/i] [url=https://www.geogebra.org/m/sw2cat9w]GeoGebra Principia[/url].[/color][br][br][br]It's worth noting that distances inversely proportional to two points do NOT give rise to T-circles, as was the case with Euclidean metric. [br][br]This implies that the possible definition of a circle as tbe locus of points in the plane whose ratio of distances to two fixed points is constant is not valid for every metric.

[color=#999999]Author of the construction of GeoGebra: [url=https://www.geogebra.org/u/rafael]Rafael Losada[/url].[/color]