[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]Let's take a closer look at the EF bar from the [url=https://www.geogebra.org/m/h3gbmymu#material/wcvnvgpv]previous activity[/url]. As we have pointed out, both points are free. The bar can be dragged independently. Moving E causes a script to drag F. Moving F causes a similar script to drag E.[br][br]Indeed, the behavior of the EF bar is the one that is most similar to the real behavior of a physical bar of length 1 unit. However, it is important to note that the position of E does not determine that of F, and vice versa.[br][br]At the start of this construction, point E occupies the same position as fixed point A, while F is placed one unit to the right of E. If we now walk point E around the screen a bit, dragging point F, and we end the walk again at point A, point F does not necessarily have to occupy the same position as it did initially.

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