Move the slider to the right one step at a time and observe what happens.

1.) After the construction, move any of the vertices of triangle ABC. What do you observe?[br]2.) How is the construction similar to the manual compass and straightedge construction?[br]3.) Which of the congruence postulates of triangles does the construction show?[br][br][br]More than [url=http://mathandmultimedia.com/geogebra/]50 GeoGebra Tutorials[/url] at [url=http://mathandmultimedia.com/]Math and Multimedia[/url].