[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]The locus of points equidistant from a line and a circle is generally composed of one parabola or, if they intersect, two parabolas. [br] [br]The locus of points equidistant from two circles is generally composed of a branch of a hyperbola or, if they intersect, an ellipse.

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