[color=#999999][color=#999999][color=#999999]This activity belongs to the [i]GeoGebra book[/i] [url=https://www.geogebra.org/m/h3gbmymu]Linkages[/url].[/color][/color][/color][br][br]The problem of visualizing a mathematical model of an object by means of Dynamic Geometry is not new. A typical example in the field of mechanisms is the well-known Watt's linkage, which includes branch choice and continuity problems, well known in the world of Dynamic Geometry, without the possibility of a "formal" visual solution.

[color=#999999]Author of the construction of GeoGebra: [color=#999999][url=https://www.geogebra.org/u/zoltan]Zoltán Kovács[/url][/color][/color]

Another thing is the visual "simulation" of a solution, using scripts:

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